Basically I think many of us find it rather curious that for what's bandied about to be an "utterly dominant console" there are so many premiere titles coming out at 30 fps, while the PS2 is consistently delivering 60 fps titles that are both top-tier, and consistently improving their graphical quality as well
a short random list of PS2 games, consisting of Japanese/Western developers and their low/mid/top tier games, with 30fps/fps problems:
FFX
Suikoden3
ZOE2
Silent Hills
MGS2 Substance
Dynasty Warriors
Kessens
Midnight Clubs
NFS
Auto Modelista
Splashdowns
Stuntman
Gungrave
Red Factions
Getaway
GTAs
Primal
Splinter Cell
Again, it depends more on the type of games and developers. Nothing wrong with the Xbox per say.
Take Splinter Cell at 30fps and remove all the dynamic lighting, the progressive scan, the widescreen support and the free camera and you get MGS 2 at 60fps.
Heehee, more like SC PS2, but with 2X details, 2X textures, 2X audio, 2X fps.