1. Bute 2. Pascal 3. Abraham 4. Taylor 5. Dirrell Those'd be my clear cut top 5. Only thing you could say to disagree would be to not include Dirrell if you had personally scored it to Dirrell and didn't recognize the 50/50-ish general opinions regarding the fight. I'm confident in the arrangement of those top 5 as well. Honorable mentions in probable order to: Johnson, Reid, Magee, Mack
I think the best opponent he defeated was Dirrell, followed by Pascal, Taylor, Abraham and then Bute.
Bute- some people had him in there p4p top 10 at the time, Froch destroyed him Abraham- massive win at the time, Froch was the underdog, abraham has never looked the same since Taylor- big gamble taking on Taylor in his backyard for your first defence, just about paid off Pascal- won first world title against unbeaten opponent in great fight Johnson- Last world class performance by Johnson, chose this over dirrell because froch genuinely deserved to win this fight