Yeah, the amount of polygons that will be able to be pushed, and Direct X-9 effects will be great.
Though the PS3 and X-Box 360 has as good a video card as a 7800GTX I believe, and they'll be able to make use of it better than with a PC, because PC developers have to make it work for a wide array of systems.
At least, if its not a port anyway...we don't want them