ruibing on 19 October 2008
While I believe the PSP and PS2 offer graphics that are in a similiar range, the PS2 is still more powerful since you often have PSP games ported to the PS2 with better draw distances, more texture, and less texture pop-ins. This was the case with Twisted Metal Heads On, GTA VC, RC Size Matters, etc.
Besides, until recently, the PSP was limited to 222 MHz until the God of War game.
