I actually thought he said it like that on purpose when I saw it lol. Thought it was supposed to show how sure of it he was. But then, if he was wrong, does this mean he would have actually had sex with Asuna?
Wow, I literally just finished this episode, but I didn't even notice that he said that! Maybe the translation was fixed in the sub I watched or something....
Just, holy shit, it's the best thing.