Don-san loves his one-on-one humanoid combat encounters. He also doesn't like enemies that read the inputs of the players.In terms of scope, it's not as amazing as Wonderful 101 or Bayo 1's finaleplus the fact that a fusion of Sheba and Jubileus is summoned and you steer the final boss to its death is kind of a rehash (though it's still awesome regardless).
However, the actual fight itself feels closer to something like an Armstrong. It's an intense, personal fight compared to a giant, which I will always prefer. Had a lot of fun regardless, even with me dying constantly.
http://platinumgames.com/2009/10/16/on-creating-enemies/