Nothing beats the suspend/resume functionality on the Vita for RPGs. It was nice to play FFX for 20 minutes, suspend the game, and come back to it a day later exactly where i left off, never having to worry about getting to the next save point because i have something else to do.
It works better with a portable system, and the actual vita is more compatible with RPGs (the Vita Ys game is not compatible with the PSTV, for example) and the fact that suspend/resume works for ANY game (PSX, PSP, and Vita) plus, you can suspend a game, use remote play, and that it stays suspended is really a great feature.