I don't even know why we would compare them. All perfect games are an incredible combination of domination, defense, and luck, and are once-in-a-lifetime events for pitchers.
Really, though, I can't say that was the best pitched game ever or anything like that. While he had all of pitches working, his impeccable control wasn't quite there (7 three ball counts is completely unlike him). Crazily enough, I've seen him pitch better against superior lineups.