So I was in Toys 'R' Us today and played a PS3 ...

[Andir]

Griffin said:
I found a list of the native resolution of some games. These are from the guy that first found out about the Native resolution of Halo3. Plus many of the games can be scaled up to full HD 1920x1080.

Put them in order by "lines" (ignoring AA for now, except for priority) color coded by system and moved the system name out front...

You can see how some of your covetted specs for the 360s GPU stack up. 

PS3 - XMB: 1920x1080p
PS3 - Full Auto 2: 1920x1080 AA 4x, bad framerate
360 - NBA Street: 1920x1080 AA 4x (30-60fps)
PS3 - LocoRoco Cocoreccho 1920x1080 MSAA 2x
BTH - Virtua Tennis 3: 1920x1080 AA 2x
PS3 - NBA 07: 1920x1080
PS3 - NBA 08: 1920x1080
PS3 - Super Rub a Dub: 1600x1080
PS3 - GTHD: 1440x1080
PS3 - Super Stardust HD: 1280x1080
PS3 - Blast Factor Demo: 1920x1080
PS3 - Pixel Junk Racers: 1920x1080
PS3 - Skate: 1536x864
PS3 - Heavenly Sword: 1280x720 AA 4x
360 - GRAW2: 720p AA 2x
360 - Skate: 1280x720 AA
PS3 - GRAW2: 720p
PS3 - Ninja Gaiden Sigma: 1280x720p
360 - Dashboard: 1280x720p
360 - Tony Hawk Proving Ground: 720p
PS3 - Tony Hawk Project 8: 1280x720
360 - Bioshock: 1280x720
360 - Perfect Dark Zero: 1138x640p
360 - Halo 3: 1138x640p
360 - Call of Duty 3: 1120x630p
PS3 - Tony Hawk Proving Ground: 600p
360 - Project Gotham Racing 3: 1024x600
360 - Tomb Raider: 1024x600
360 - Tony Hawk Project 8: 1040x584 AA
PS3 - The Darkness Demo: 1024x576