I wouldn't say Crysis isn't possible on the PS3. Although I think it's very likely an identical game engine wouldn't work well on the PS3. IMO we haven't seen anything yet of what the PS3 is capable of technically, even with impressive launch titles like Resistance (without framedrops during very heavy fighting) and Motorstorm (solid framerates in IMO the most impressive racing game I've ever played) developers are only scratching the surface.
Years before the PS3's release I already predicted a learning curve for developers and predicted some time before developers would really start using the true benefits (SPEs) of the cell processor.







