User blog comment:SomeoneYouUsedToKnow/SYUTK's V5Finale - Anti-Climax - Impressions/Recap/@comment-27144409-20180125220908/@comment-25936766-20180125225847

Actually, you're wrong, at least for Aincrad.

He had a great HP regen, yes.....because he was overleveled. And if there's one small saving trait for SAO is that Kirito's OPness in Aincrad was at least somewhat justified (he played the Beta, that gives people quite enough time to get to the high Lvs).

There was one part in SAO where he's attacked by like 5 people all at once and he recovers HP faster than they can take it down.....

...but that is justified by the fact that he was many levels above them. In fact, that scenario can happen in an actual MMO if there's too much difference in "quality" between players.