Just tried out ps3 remote play with the vita. This compatibility list had me excited about playing the Pixeljunk shooter, but I was disappointed to see that it doesn't support the enhanced control that the Vita hardware offers.
Second stick doesn't work, and the shoulder buttons do nothing.
I suppose this was meant to work with the PSP, since the fire/grappling hook are remapped to the face buttons. But that's too bad they don't let the Vita act as a PS3 controller should.
Anyone know if there's any way to remap the commands to the Vita's L and R buttons?