sure, the graphical gap is smaller this generation, but the controller gap is huge. MS and Sony are rushing to catch up to Nintendo, not the other way around. obviously the big mover this generation was the control scheme. Next generation we could see an even better control scheme that blows this generation away, or we could see something totally different.
As for graphical improvements. There is always room to improve, so you'll see improvements, but the upgrade will be minimal. If graphics are the only reason to upgrade people won't be rushing out the door to get a new system (hence why Nintendo keeps saying Wii 2 won't just be Wii + HD)








