I think the problem with Jake will be that he can't emote. On the Bach, we saw two expressions -- the closed mouth cheesy grin and the open mouth, toothy cheesy grin. That's it. I can't imagine him being able to bring the heat and passion and SELLING IT like he needs to for the latin dances. He will probably be able to get through the waltz, etc. But I don't see him wiggling his behind in any kind of convincing way (don't even want to imagine it!) for the rest.