I'm kind of thinking we either won't see Kotetsu's sixth Pokémon in his battle against Ash or we won't see it in this episode.
Now if Kotetsu does defeat Ash and we don't see it, I am hoping Kotetsu will use his sixth Pokémon in his next round battle.
People who think it is unbelievable for Cameron to be strong because he is this idiot kid clearly have not been viewing anime properly.
Anime has proven that characters don't always have to be geniuses to win in a battle, for some people brawns is what works for them.
In fact, Cameron is basically just another Ash. Ash too is dumb, the main character, the guy you're always rooting for.... DO YOU SEE?