http://blog.seattlepi.nwsource.com/digitaljoystick/archives/138345.asp
This article is awesome, not because I agree with it, I actually disagree with most of it.. but just because.. well.. here read on!!
12 reasons (FOR THE RECORD - I do not agree with all these points, some I think have no reason being used for GTA IV comparison, others are just stretched out truths/half lies)
1. Higher Native Resolution : The native resolution of GTA IV on the Xbox 360 is 720p while the PS3 is 480p. A game's native resolution is the dimentions that the image is rendered at before it is scaled to match the resolution setting on your HDTV. The PS3 hype about games at 1080p is pretty much pure hype. There are no complex 3d games that run at that resolution. The graphics on the PS3 version of the game is rendered at a lower resolution and stretched more giving it a more blurred final image, while the 360 game had more pixels at the start and ends up a crisper image.
2.The ANA chip : The Xbox 360 has hardware based scaling of images to scale images to whatever resolution is needed on the fly. Since this is done in a dedicated chip this leaves the Xbox 360 CPU and GPU free to work on the game. The PS3 requires that all graphics scaling to be done in software by the CPUs. Granted it has a lot of CPU power but hardware based graphics scaling is a much more elegant way of rendering 3d images at multiple resolutions.3. More availible RAM : The PS3 opertating system is a memory hog that eats up alot of avaible memory. This means that it needs to either load a massive install on the PS3 hard drive to cache texture data or use lower resolution textures. The Xbox 360 on the other hand as a very effecient minimalist operating system (It's not Windows) that leaves a lot of memory resources left over for game developers.
4. CPU GPU architecture : The PS3 CELL architecture is great at chomping long numerical calculations but breaking down computational tasks to that many CPU cores takes a serious juggle to get them all working at an even work load. Using multiple CPUs didn't work out so hot for the Sega Saturn.
5. Developers, Developers, Developers, Developers! WOOO! - MS CEO Steve Balmer : Microsoft's first product was a programming language. Software development tools has been a major part of their DNA from day one and both the Xbox and Xbox 360 were designed to be a very effective platform for game developers. To Microsoft development tools are not something to be trifled with. The Xbox 360 game development software libraries are handsdown the best in the world from what I've read about them and the company has worked a long time in garnering a strong supportive relationship with software developers for their platform. It is easier for game developers to get results quicker using the Xbox tools than the PS3. Just look at what a major programmer on Rockband had to say bout it.
6. Faster optical disc access : Blu-Ray might be great for movies but when it comes to moving data off a disc and into RAM quickly for game DVD is a better way to go. The Xbox 360 version does not require you to hand over close to four gigs of hard drive space for an install that needs to be there for as long as you own the game.
7. Exclusive downloaded content : Microsoft probably had to wisper some sweet nothings into Take 2's ears and possibly open up their pocket book to guarentee that extra downloaded content for GTA IV would only come out on Xbox 360. We don't know if it is going to be new weapons, cars, missions or full islands but I know that it is going to rock and the only way to get it is via Xbox Live
8. In-game messaging via Xbox Live : I can hit the guide button on the Xbox 360 and see if my freind BBQ is on his Xbox 360 and send him a message inviting him to play a game right from the game. We then might throw it down in GTA IV or kick it Puzzle Fighter HD style with a cross game invite.
9. In-game network data : I can tell what level my freind BBQ is playing from looking at his gamertag. that is pretty Meta Web 2.0.
10. Achievments and Gamerscore : I can tell how far he is and if he has gotten that taxi service achievement yet.
11. On the Xbox 360 version The network code in the game does not crash the game, the multiplayer servers are actual dedicated Xbox Live servers and not GameSpy and there is no file corruption glitch in the 360 version.
12. Better controllers : There is rumble in all the wireless gamepads on the Xbox 360. The old default PS3 controller has allways feel way to light to me and I do like having rumble. GTA IV makes use of the analog triggers for driving and the 360s top triggers are much better for presision driving controls.
Edited (spelling): Goddam... I need to proof read my crap sometimes
Proud Member of GAIBoWS (Gamers Against Irrational Bans of Weezy & Squilliam)