At Heavyweight:

Speed: Muhammad Ali
Power: George Foreman
Defence: Jack Johnson
Aggression: Mike Tyson
Meanness: Jack Dempsey
Conditioning: Rocky Marciano
Chin: Muhammad Ali
Guts: These are all brave guys.
Technique: Gene Tunney
Jab: Sonny Liston
Combinations: Joe Louis

P4P:

Speed: Jimmy Wilde
Power: Still Big George
Defence: Willie Pep
Meanness: Stanley Ketchell
Conditioning: Rocky Marciano
Chin: Julio Caesar Chavez
Guts: These are all brave guys too.
Technique: Sot Chitalada
Jab: Tommy Hearns
Combinations: Ray Robinson

The worst:

Speed: The Quiet Man
Power: Jonathan Ruiz
Defence: Ruiz, J
Aggression: That latino heavyweight guy
Meanness: The guy that clutched everyone
Conditioning: The one with the lawsuits
Chin: um, let me think.....
Guts: Even he is still a brave guy to get in the ring professionally.
Technique: Definitely that guy Ruiz
Jab: Hmmn
Combinations: Yep, good ole John again