As far as Guts goes, Yell is much better for gaining JP than Accumulate--you use it, and then you keep using it, and not only do you gain JP, but your turns come up more and more.

But I like Ramza's class as it is, really...and I kind of liked the fact that though Delita was much more focused and Ramza just sort of drifted through things until he started on the Lucavi, (both from their classes and what happened), Delita really lost.

But uh, outright combat, Delita would win because I'm not sure Ramza has the steel to fight his former best friend.