IMO I think Edgar would be a tougher fight for Conor. The main reason being because Frankie has elite conditioning and great wrestling. Aldo's striking wasn't that much better then Chad's even though Chad gave up a huge size advantage. Because of this I'm giving Conor the striking advantage (Chad looked like a fish out of the water on his feet against Conor). Jose also has poor cardio, which if he can't survive on his feet he will look for the ground game. If he can get it there he will gas pretty fast much like Chad did. Frankie is good enough and big enough on his feet to not look so vulnerable and also has the takedown when he needs it. Also Conor can't welcome the takedown by throwing crazy kicks because Edgar can grind out a round on top and be fresh the next round.