For games, I think, 7 inch tablet is more apt.. Try playing temple run on an android 7" and a 10" and you'll know. However, iOS is a better platform for gaming, and iPad does not have a 7 incher....
But, overall, I would suggest an iPad over any other tab for gaming.. This is coming from a guy who uses ASUS transformer and the only apple product that I have is an iPod nano.