Personally, off this fight, I'd put Kirkland at #1 (Khan will undoubtedly regain that spot though) Lemieux should slot in around #4 or 5, imo.
Litzau is in the top 5 for sure, and has been for a long time. Harris has been in the top ten in recent lists.
Mumin is right, you know? Kirkland has a chin like Grade AA eggshells. His eggshell chin was cracked by a wet noodle.
Bottom line, whether you call it "egg," "glass" or "china," Kirkland has NO punch resistance. He looks like a stiff wind might blow him over, or at the very least put him on ***** street!
RJJ shoudn't be number one, for the very fact that the guy is obviously way past his prime and whether his chin is weak or not, it is irrelevant and is only put in there for Rico Spadafora's great delight. He has a fetish for RJJ glass jaw.
Lord knows every fighter prior to 1950 had a glass jaw for the same reason. Greb, Lamotta, etc all know how fighting every week turns you into a glass jawed joke.