Let's just think for a second.
On Saturday night, Frankie Edgar managed to defend his lightweight title against a bigger and stronger fighter, and he did it convincingly.
Now, imagine that fighter was to move down to a weight class and challenge the champion there.
You'd think he'd be able to beat him, right?
Here's five reasons why Jose Aldo, the featherweight champion, would beat the lightweight champion, Frankie Edgar.