I think that's pretty much all gaming right now though. Everything is a sequel or a port. Even the latest stuff on and announced for 3DS. Not a single game is a new idea. Obviously there's the odd exception but it's not very common is it?
I don't see how anyone could disagree with the fact that when it comes to original content, the Vita is massively lacking. Almost everything released of late is a port of either a PS3/indie game.
I've played most of them already and they were cheaper the first time they were released.
I was hoping Soul Sacrifice would address that but sadly, the demo was pretty mediocre for me.