Unknowns/shadow are the only two who got it right
In order of precidence...
Setzer: because if you equip him with fixed dice, the offering, palidin sheild, Safety Bit. He will be a god. Here is why the fixed dice is the best weapon hands down. It is a mathematical equasion that takes your levels multiplied by the first dice multiplied by the second dice and third... It is indefensible. Meaning if you go up against an opponent with 100% plus evasion or 255 defense it won't matter. That can not be said about any sword.
Gau: Equip him with the merit award. Then choose a weapon. Then equip him with the Genji Glove and the Snow Muffler. Use get this... Gaurd. He will be a the most physically dominating charater in the game.
Gogo: You can do some wonderful things with the merit award and economizer with this guy.
Mog because you can equip him with the snow muffler and the best lance... I forget the name. His Defense will be 255 and his attack will be like 255 and his magic defense will be up around 240 something.
Shadow equip him with the mirage armor and it is possible to have his evasion in excess of 100%.
Terra: need I say more?
This montle crew can seriously turn your picks into mince meat. Disagree? try it and prove me wrong.