THIS IS LITERALLY THE REASON I DID NOT BUY ONE.
Seriously, Sony didn't just drop the ball with everything Vita related. They doused the ball in kerosene and tossed it in a blast furnace while cackling madly.
Compatibility is exactly why I didn't get one. Army Corps of Hell was my favorite Vita game (before I sold my system like a ding dong), and then I learn the game isn't compatible with the Vita I'd prefer to own...... WHY!?!?!? It makes ZERO sense! Same goes for the DXC, ITS JUST A PSP GAME for crying out loud lol.
I understand Uncharted and other touch based games being incompatible cus you're using a gamepad, but ACoH as well as every PSP game DOES NOT USE ANY TOUCH OR GYROSCOPE CONTROL YOU DUMBFUCKS. It'd be an amazing system if it actually worked lol... I just thought of something: PSTV works with DS4, which has a touchpad- use the touchpad for front touch control, use the L2 or R2 in conjunction with the touchpad for backtouch control.... sounds a little clunky, but it's a solution lol