I'm not biased, I actually just rewatched the fight and thought that Conor didn't lose because he was tired. He lost because Nate broke him mentally. However That had a lot to do with the element of surprise like Firas put it. I think this time Conor will be prepared for Nate's durability, he was having much more success when he was countering Nate. So I think he'd focus on that more than just swinging heavy shots. I think Nate survived the first fight because he was going slow so Conor didn't counter as much. I think this time Nate will come in hard to prove what he said, with a full camp he wouldn't have been touched. Conor is much faster and a better counter puncher. Mark my words!