Kenny will take this fight.
I don't find Aldo worthy of even 20% of the hype he is getting. The guy has literally taken a 1 handed Faber to a decision, knocked out Manny (who hasn't? Rob Emerson knocked him out in 12 seconds), and defeated Brown. You know who else defeated Brown? Manny, who knocked him out in the first round.
Literally, that's it, that's his entire career. It's not that impressive, in fact, it's the single weakest, unimpressive resume of any champion the UFC has.
Kenny will defeat him.