Where I notice most that its a translation is the scene between Yuna and Tidus outside Rin's on the Mi hen Highroad. At one point Tidus says something like "but Yuna how do you beat something big like that?" then waves his hands in a strange way which doesn't look at all like he's describing how big Sin is.

I wonder what else he was saying?

Well its a great sequence anyway. "At the world's edge, in Zanarkand."

The laughing scene? Its embarassing but I guess its meant to be.