I'm running SSFIV:AE on my machine using two U360s. I use Joy2Key to make it work properly as my buttons are not using the U360 built-in encoder, but rather an I-PAC. Because of this I have a mix of gamepad/keypad inputs, so I just use Joy2Key to make everything Keypad. Even considering my convoluted setup, the sticks do work fine for the game, including 2 player mode.