games aside its as simple as this. wii is loli jail bait. xbox360 is a big muscle guy that looks ugly and ps3 is a hot japaneese chick.
in all seriousness even though i champion gameplay i believe in rpg's graphics are possibly more import than they are in any other genre. simply due to the fact that many times you will be watching on screen attacks that you commanded. ive never liked xbox so it would neeed a phenominal rpg for me to consider one. something like valkyrie profile 3 would have to announced as being exclusive to it,or a new SRW game. wii just has no interest for me,and its image is offputting to me. ps3 has some hot shit in my mind. ffxiii and a new level 5 game :o plus non rpg's like dmc 4 and heavenly sword.
to make it short and simple i like mainly rpg's and fighting games and the ps3 is likely to have more of both. meanwhile the xbox is chock full of fps wich is a genre im not a fan of.