Let's take a look at the quality of exclusives for both the X1 and PS4.

All scores are used from gameranking.com. Scores without brackets are for games already released and have a score assigned. Scores within brackets are a little more complex due to the game now being released.

To come up with a score in brackets I used the following method to make it as fair as possible.

How scores were chosen, in order of importance;

• If games was released on another platform, that score was used
• If game is in a franchise, an average score for the last 3 games from that franchise was used, if game is part of main franchise (not a spin off), then only main games in the main franchise will be used.
• If game is a new IP then an average score for the last 3 games from that developer was used

Scores weren't used if (including games used to make an average score for unreleased games);

• The gameranking score for game had less than 5 reviews
• Games that are on mobile devices

I tried to make it as accurate as I could. Scores in brackets are only a indications of the quality of the IP/developer used from past games.

Enjoy the information, chat away, avoid pointless arguments although constructive debates are welcome. If you disagree with somebody, please don't be rude and counter in a respectful and contructive way, providing reasons and evidence where possible. Anybody not following the rules, hopefully mods will deal with them quickly as to not disrupt the thread.

Sources: gameranking - wikipedia - giantbomb

As always any help/ideas with list or with score are welcome.

1st Party exclusives

PS4

1. Killstrain (87% MLB games)

X1

1. Halo 5: Guardians (88% Halo games)
2. Forza 6 (87% Forza games)

2nd/3rd Party Exclusives

PS4

1. Alienation (78% Dead Nation AE, Resogun, Super Stardust Ultra)
2. Fat Princess Adventures (71% 1 game, Escape Plan Vita)
3. The Tomorrow Children (71 % Nom Nom Galaxy, PixelJunk 4am, PixelJunk SideScroller)
4. Until Dawn (52% Walking with Dinosaurs, Doctor Who TEC, Start the Party STW)
5. The Order: 1886 63%
6. Bloodborne 91%
7. Brawl 64%
8. Omega Quintet 58%
9. Hot Shots Golf (81% HSG games)
10. N++ (83% 1 game N+ not enough reviews for N)
11. VisionEck (First game)
12. Guns Up! (First Game)
13. Deep Down (79% Resident Evil: R, Resi Remaster, Ultra Street Fighter)
14. Trans-Galactic Tounament ( 1 game, SmashMuck Champions, no score)
15. Disgaea 5: Alliance of Vengeance (80% Disgaea series)
16. Rime (68% 1 game, Deadlight)
17. Dragon Quest Heroes (74% Dynasty Warrios 8, Hyrule Warriors, Samurai Warriors 4)
18. Everybody's Gone to the Rapture (73% 2 games, Amnesia: A Machine for Pigs, Dear Esther)

X1

1. Funk of Titans 41%
2. Fruit Ninja Kinect 2 68%
3. Slice Zombies for Kinect 40%
4. Azito x Tatsunoko Legends (lack of scores)
5.  Natsuki Chronicle (lack of scores)
6. Nero (visual novel) 59%
7. Raiden V (66% Raiden series)
8. Shooting Love Triology (lack of scores)

Platform Exclusives

PS4

1. Hell Divers (71% Gauntlet, The Showdown Effect, Magicka)
2. MLB '15 81%
3. J-Stars Victory VS (58% Attack on Titan: Humanity in Chains, Fossil Fighters: Frontier, Pokemon Mystery Dungeon: Gates to Infinity)
4. Amplitude (71% Fantasia: Music Evolved, A City Sleeps, Dance Central Spotlight)
5. Godzilla: The Game (70% Pac-Man Museum, Pac-Man: GA2, Tekken Revolution)
6. Kodoku (first game)
7. Pavilion (first game)
8. Persona 5 (88% Persona series)
9. Super Exploding Zoo (75% Hohokum, Frobisher Says, Kahoots)
10. Sword Art Online Re: Hollow Fragment Director's Cut 63% (Vitas score)
11. Sword Art Online: Lost Song (63% 1 game, Sword Art Online Re: HF)
12. BigFest (first game)
13. Samurai Warriors 4-II (74% Dynasty Warrios 8, Hyrule Warriors, Samurai Warriors 4)

X1

1. Screamride 75%
2. Happy Wars 64%
3. Cuphead (first game)
4. Gigantic (no scores for other game)

Console Exclusive

PS4

1. Bombshell (69%,1 game, Rise of the Triad)
2. Broforce (first games)
3. One Piece: Pirate Warriors 3 (70%, 2 games from OP:PP series)
4. The Vanishing of Ethan Carter (first game)
5. Ironclad Tactics 68%
6. Apotheon 74%
7. Q*Bert Rebooted 45%
8. OlliOlli 2: Welcome to Olliwood 86%
9. Hotline Miami 2: Wrong Number 79%
10. Axiom Verge 84%
11. Titan Souls 74%
12. Broken Age: The Complete Adventure 83%
13. Nom Nom Galaxy 75%
14. Toren 63%
15. Tabletop Simulator (first game)
16. Nobunaga's Ambition: Sphere of Influence (73%, 2 games from series)
17. Chasm (lack of reviews)
18. Darkest Dungeon (1st games)
19. Day of the Tentacle: Special Edition (79%, Broken Age, The Cave, Kinect Party)
20. Distance (first game)
21. Dragon Fin Soup (first game)
22. Drifter (first game)
23. Ether One (81% PC version)
24. Galak-Z: The Dimensional (82%, 1 game, Skulls of the Shogun)
25. Guns of Icarus Online (71% PC version)
26. H-Hour: World's Elite (first game)
27. Jamestown+ 81%
28. Killing Floor 2 (74%, KF 1)
29. Not a Hero (75% PC version)
30. Project Phoenix (lack of info)
31. Relativity (first game)
32. Rocket League (70%, SSARPBC)
33. Samurai Gunn (82%, PC version)
34. Skulls of the Shogun: Bone-A-Fide Edition (82%, SotS)
    
35. SOMA (74%, Amnesia: A Machine for Pigs, Amnesia: The Dark Descent, Penumbra: Requiem)
    
36. The Forest (first game)
    
37. The Hum: Abductions (first game)
    
38. The Talos Principle (87% PC version)
    
39. Volume (80%, 1 game, Thomas Was Alone)
    
40. Enter the Gungeon (lack of reviews)
    
41. Dungeon Defenders 2 (83% DD)
    
42. Orcs Must Die! Unchained (84%, 2 games from series)
    
43. Dragon's Dogma Online (80%, 2 games from series)
    
44. EverQuest Next (86%, 2 games from series)
    
45. Kingdon Under Fire II (72% KUF series)
    
46. PlanetSide 2 (84% PC version)
    

X1

1. Bedlam (lack of Info)
2. Ori and the Blind Forest (Also on 360) 88%
3. Fable Legends (66% Fable series)

Timed

PS4

1. Hellblade (83%, DmC, Enslaved, Heavenly Sword)
2. Hollowpoint (71%, 1 game, Crackdown 2)
3. Gang Beasts (1st game)
4. The Witness (93%, 1 game, Braid)
5. No Man's Sky (88%, Joe Danger, Joe Danger 2)

X1

1. IDARB 79%
2. Neverwinter 67%
3. Superhot (1st game)
4. Rise of the Tomb Raider (87%, 1 game, Tomb Raider)
5. Inside (91%, 1 game, Limbo)
6. Elite: Dangerous (81% PC score)
7. Magic Duels: Origins 64%

Re-Release & Remakes

PS4

1. Grim Fandango Remastered 78%
2. Super Stardust Ultra 74%
3. Final Fantasy X/X-2 HD Remaster 85%
4. God of War III Remastered (92%, original)
5. Final Fantasy VII (92%, original)
6. Journey (93%, original)
7. Hustle Kings (83%, original)
8. Tearaway Unfolded (88%, Original)
9. Uncharted Collection (93%, 3 game in collection)

X1

1. State of Decay: Year One Survival Edition 74%

Summary avgage estimated quality

1st Party:

• PS4 - 1 game at 87%
• X1 - 2 games averaging 88%

3rd Party:

• PS4 - 15 games averaging 72%
• X1 -5 games averaging 55%

Platform Exclusives:

• PS4 - 9 games averaging 71%
• X1 - 2 games averaging 70%

Consoles Exclusives:

• PS4 - 32 games averaging 77%
• X1 - 2 games averaging 77%

Timed:

• PS4 - 4 games averaging 84%
• X1 - 6 games averaging 78%

Remakes:

• PS4 - 9 games averaging 86%
• X1 - 1 at 74%

Total:

• PS4 - 70 games averaging 77%
• X1 - 18 games averaging 72%

Hmmm.

Some suggestions, though i might be making it too complex:

- Find a way to differentiate between small-scale and AAA releases
- Differentiate digital only releases.
- Investigate the use of bands. For example, using a flat average of all games of a certain type will include a few small and badly performing games, that will skew the otherwise very appealing nature of better games.

Finally, you're missing Fable Legends, which is pegged for a 2015 release, and on your criteria will come with a ranking of about 84-85.

Well ... it HAD to come to this in the end! lol.

1 - Not sure if that would be simple. There is no black and white, no big or small. There a lot of grey areas and everybody will see it in a different way. For instance how would you class Ether One? It's one of those middle ground games in terms or scales.

2 - I might be able to do this. I can bold digital games or something.

3 - Do you mean games use to produce an average score for unreleased games? When I was doing it, they all seemed preety fair. Do you see anything out of place?

Will fix Fable Legends now

Bloodborne is a 92% by the way.

1. True, it wouldn't be easy - but its fair to say that many wont perceive an 80 game based on a four man team with a charming 2d campaign to have the same value as an 80 game with a 100 man team with excellent graphics and a comprehensie multiplayer.

2. Good idea.

3. No I don't mean the individual games - more that when you average them out, you get an unrepresentative notion of the quality of a console's library. I think the Wii is a great example. It had some of the best games of last generation - but the sheer weight of shovelware it had meant that just providing an average made the library look worse than it was. Your PS4's console exclusives include a whole host of game under 65 for example. In gaming review vernacular, that makes them pretty bad games (whereas movie reviewers tend to make use of the entire review spectrum). Perhaps, in addition to your averages, you could average the top five games in each category for example - giving a better idea of the quality of games a larger portion of players will enjoy.

I used gameranking

Ahh my mistake. I glanced over that part. Nice work nontheless.

Its 90.6, rounded up to 91.

I think the simplest way of going about it is to just separate games into retail and digital-only groups. There will occasionally be an obvious exclusion (like an indie retail collection or a limited indie retail run), but it works most of the time and involves little work. It also avoids definition debates, since while 'AAA' is used in a dozens different contexts by different people and companies, 'retail' is pretty firm :p