This would determine a LOT in terms of how you rank fighters: Fighter A 10-3 Wins over: 3 ATG's at-or-near prime 2 HOF level fighters all during prime 5 wins against good fighters in their prime Lost once to an ATG in their prime in a razor close fight which was avenged later on. Lost twice whilst PAST prime against two ATG's in their prime when fighter A fought them. Fighter B 12-0 Wins over: 1 ATG who was PAST prime when they fought 2 HOF level fighters who were in their primes when Fighter B fought them 9 B grade fighters in their prime No losses. Imagine they roughly have the same H2H ability. I go with Fighter A, but I'd like to know what you think and why.