I think that system of "say which skills each person has" is unreliable, as most character's abilities are highly ambiguous, and one mistake can lead to a character getting a flood of votes they didn't deserve and knocking out the superior fighter. It wouldn't the first time it's happened with an FFVI character. Tidus has been limited to his part of the Sphere Grid (hasn't been given stuff like Auto-Life or Use), so it's as fair as you can get with these two characters.