Zell is basically a damage dealer. He can inflict more damage then Squall even. They are both over energetic characters. What really wins the vote for me is Zell is less annoying.

Wakka has good moves and does stick out more in story modes. He really never quits talking about the same thing. Not to mention he is the leader as what use to be "the worst blitzball team". So thumbs down. I don't like his hair even. :P