At a Q&A in Glasgow, McGregor says he was impressed with his own performance against Mayweather.
I improved my boxing skill to an extent. Everyone was saying to me get in and ragdoll him and muscle him from the bell. And I could’ve gone in and done that. But I out-skilled him, I outboxed him early. You can’t deny that. I outboxed him and he didn’t know what the f**k was going on. He just covered up his head and walked forward. When the f**k have you ever seen him do that?… It is what it is, but I still feel like I could beat him under boxing rules. We’ll see what happens though.
He also says a rematch would have a completely different outcome:
I know if I went another go with him, under boxing rules, I’d get that win. I know that. I know by the feeling of him in the first fight. He had to change his whole approach. He fought completely than he (usually) fought, he couldn’t figure out what I was doing early on. I feel with the lessons I learned from that first fight, if I had another go around, I’d get him.