Could you give me some more details/info on how you did this? I've paired my PS3 controller with my Nexus 7 now and it works for controlling menus but when I load up a game on an emulator, it doesn't work. Only the on screen controls do. What apps/games did you try specifically?
When I get home I can give you more specifics, but I use PlaywithSix and under options, I enable tell Android it's a gamepad. I had tried some emulators where I could map buttons in the emulator itself. I tried a couple games from the market with not too much success.