Edgar fought well towards the end of the fight, he tried to rack up points by going with leg kicks Forrest Griffin style but the judges weren't convinced.
I dislike the way Aldo fights sometimes...he fights too rigidly these days. I feel like sometimes he forgets...as Chael Sonnen would say, he's in a fistfight.
Maybe a move to 155 would fix that.
Yeo you nailed it, he's too scared to explode like in the WEC because he fears he will gas quick and screw himself if he doesn't finish, 155 pounds would be great for him, but first a fight with korean zombie for fun and then 155.