another (better) way to make a heavyweight atg list

there are some posts with atg heavyweight lists. probably (or at least i think so) mostly based on the fighters achievements and resumes. let's make one purely based on the factor who can or will most likely beat who.
here's mine (based on a 15 round fight) all fighters in there prime ofcourse
1 ali
2 louis
3 holmes
4 liston
5 foreman
6 lewis
7 frazier
8 tyson
9 dempsey
10 baer
11 johnson
12 holyfield
13 norton
14 marciano