I'll say this also, I don't like a ton of games in the 80 and up DS games either.

The best series on the DS, imo, and the reason its better than the PSP(IMO!) is because it has the Phoenix Wright series, which is one of the best gaming series I've ever played, handheld, console, or otherwise.

Now, one or two of those games doesn't even average about 80.

Then you got games like MP:H, and MKDS, which I am really not big fans of(don't like to play games like that on handhelds) which get really high scores.

That's why its only my opinion, but imo, let me tell you this about what my opinion is, and yes it's controversial:

I think that most gamers whom I could respect have tastes very similar to mine. We're not into genres, nor do we pick our games depending on their heritage. Instead we play "good" games, which are made for gamers, and skip "redundant" or "bad" games. There are only a few games on each system for people like me, and here they are:

PSP:

DS:

Castlevania: DS
NSMB
Elite Beat Agents
AdvanceWars: Duel Strike
Mario and Luigi: partners in time
Castlevania: Portrait of Ruin
Layton
Hotel Dusk
PW 1
PW 2
PW 3
PW 4
Mario Kart

PSP:

Tekken
Papaton
Disgaea
FFT
MGS:PO
Castlevania: DraculaX Chrons


IMO: Now look, you can lie to me all day and tell me your setting around playing Ridge Racer, and I'm sure there is some Japanese dude somewhere doing just that, but when you list me a set of games like I posted for the DS, then list me the top rated 50 games on the PSP, man, there is no way I could consider choosing the PSP if I was on a desert island. Even some of the best games on the system are ports, imo.

Now, this doesn't matter and it's all imo, but I'm not gonna stand here and have my opinion marginalized by you, because you have games rated over 80 percent like WWE SmackDown! vs. RAW 2006.

If you don't look at the data, its easy to say, "Well you got me on those numbers" but just go read the games, one by one, on the PSP over 80 percent list and tell me how many are worth your time and money to check out, leave your fanboyism at the door, and respect my opinion, even if you disagree.

LoL, I know this will get em riled, but if your up for a laugh, go to gamerankings and check out the 80percent PSP game list they are flaunting. Here are the "top 3" titles:

Also, as an equal supporter/owner of both the PSP and DS, I'll say this:

This is a great year for the PSP, but the DS has a better library overall.

There's a reason that more of my handheld time is clocked in on DS, and why a good chunk of my PSP time is dedicated to replaying classic PSX RPG's.

 What's point? Filler games are important if you want a well-rounded library.

Filler games are only important on the internet. If you don't believe me, then go buy some.

That could also be because a lot of the better DS games, like PoR, Advance Wars, and Phoenix Wright, are probably a lot longer than the average PSP game. I have put probably 200 hours in Advance Wars, and maybe 40 in the PW series. Nearly 20 in Zelda I'm sure, and I've probably played through NSMB, Elite Beat Agents, or Bleach: Blade of Fate more than all the others combined. There are some awesome timesinks on the DS, lol, I usually end up getting lost in one game for a month or so before I come up for air.

You're playing the PS2, the king of filler games, right now. Obviously, filler games are important. Without them you will be waiting years in between the AAA games. 

Than go and try MHF , and see that you can easily get 400 hours to top everithing . Im not joking , a guy on GS actually uploaded his savegame and it was 415 hours . Every armor was complete , every quest was beaten perfcetly .

Also , the PSP cant me compared to other sistems in game exclusives , because its a portable console , and they ususally get fever exclusives . A home console has at least 10 major exclusives/year , but a portable ususally has to survive with 3 or 4 .

Kingofwale has a point , most 80 + games are quality titles , and the PSP like it or not has more than the DS . Its not your taste , its the avarege gaming taste , and if a game achieves 80 % , than it is usually considered great .

 Also , I dont know what huge DS game is actually comming this year . Except DQ9 as RoB mentioned , no other big game is comming , and again , just like MHF games , they only count in Japan . Probably later on we will see some bigger announcements for it , I dont doubt it , but untill then the only game I would be interested is Ninja Gaiden DS , but again , the controls blew me off :(

 In the end if we want to talk aboust gaming tastes , I dont like DS games . I owned 2 , but both time I sold mine ( my DS lite was sold afther a month , because I havent played it for nearly 4 weeks , even if I had 7 games on it ) . Dont think that anyone has to have your gaming preferences . Yes there are not that many PSP games sold , but probably every game was downloaded illegaly at least 5 times more ... Im one of those whom actually likes PSP games , and yes I would rather play a mediocre port than  the console version . Why ? Because its my own god damned taste , thats why !

 And now for all PSP haters : if you cant stand that the PSP has a good year , than dont and get the hell out of here . You dont see me going on DS threads and writing that the sistem is a piece of crap . So please , let us be and dont provoce us , because then we wont provoce you . 

      Thats all and good night folks :)
 

Actually you often find some real treasures among filer games , bealive me I know . I often buy games at random , and often I have a pleasent surprise :)