Im not sure which android tablet boasts the best specs but I would like to note something.
Very few games are capable of pushing any dual core tablet to its limits (GTA 3 on full specs...maybe). There isnt a lot of graphically intensive games on the market.
If you are looking at serious games then I would suggest On live for you American Folk, it would be the best avenue for gaming providing you can find a way to get a solid controller to work with it. It also effectively negates the specs of a tablet.
Thats my 2 cents but please do post back if you do manage to find a super tab