XIII was godawfully boring for most of the game, with the first half being almost unbearable because of the restrictions. XIII-2 on the other hand was decent entertaintment from the start.
And XIII-2 has the abominable story and a cast full of unlikeable, bland jerks except for maybe Noel who's somewhat decent.
Hard to say, really.
Sounds like XIII-2, as you say nothing positive about XIII but you can at least say that XIII-2 has "decent entertainment" and Noel was pretty daycent. Oh yes, yes he was!
I suppose you're right. If someone put a gun to my head and demanded that I replay either of them, XIII-2 would be the one I'd pick. So I guess it's not a tough question at all. --- "And you have proved to be A real human being and a real hero..."