And you know why every player on this list is a hall of fame player? Because they put these stats against quality NBA centers and you have to be a Hall of Famer to post such lines against the legit competition.
For example, Olajuwon did it with 27-28-8 on March 26, 1986 against Indiana and Herb Williams. Herb Williams was a productive starting center for years and his stats for the 1985-86 season were 20-9-2.4.
Mutombo on November 11, 1994 had a line of 19-26-9 when he played against the Lakers (who lost in the second rounds in the playoffs that year) and Vlade Divac.
And so on.
Kessler played against the tanking Hornets and the mighty Orlando Robinson/Colin Castleton. Comparing him with those actual Hall of Famers without the context is honestly pretty insulting to them. I can guarantee that the current Kessler in no way or shape is capable of putting these numbers against the modern equivalent of Herb Williams and Vlade Divac. He simply got incredibly lucky with the opponents on the day when he was feeling it.