I loved ffX-2!
But I admit, not because of the gamepaly.
I liked the campy girly aspect, and I loved how it was like some lame 90's tv show. Really, it was hilariously good. And the soundtrack! It was like a 70's cop show soundtrack! I think people hate it mostly because they re used to FFs taking themselves real seriously.
Or they're too "manly" to appreciate it.
It is a bit of an acquired taste.