Crysis 2 isn't going to be as GPU demanding as the first one was, since consoles don't have anywhere near the specs that a decent PC has.
I have the Crysis minimum requirements right in front of me now.
Processor:
Pentium 4 2.8ghz or faster
AMD Athlon 2800 or faster
GPU:
Nvidia 7100 series and up
ATI X1300 and up
I could see this as being about the same as Crysis 2.