Two Of The Biggest Punchers Who Faced Eachother.

[El Kabong]

Lewis-Vitali
Wlad-Sam Peter
RJJ-Toney (looks a bit out of place on this list)
McClellan-Jackson
Hearns-Hagler
Shavers-Lyle

Your last three are the best on your list.

Well sure it LOOKS out of place since they were both more boxers than sluggers but RJJ was 26(23 KO's)-0-0 and James Toney was 44(29 KO's)-0-2...but James Toney had some big power when he used it.