Juan Manuel Marquez vs Manny Pacquiao III Assuming both fighters win their upcoming fights it would be between P4P #1 and #2 and hype for a rematch to settle the score would be legendary. OR Floyd Mayweather Jr. vs Manny Pacquiao Former P4P #1 vs Current P4P #1 would be big as well. See who the dominant fighter of the last 10 years is. Which would make more money? The popular choice would be PBF Pacquiao but I actually think JMM Pac III with proper exposure could be HUGE.
Of Course Pac-PBF. IN PAC-JMM you have 2 non english speaking fighters.(well they do but they dont do it unless asked to.) That would not sell well to the american public.
I wouldn't be surprised if Mayweather-Pacquiao outsold Mayweather-Marquez, Pacquiao-Marquez 2, and Pacquiao-Cotto combined.
Maybe you mean would make the worst money... Come to think of it... Before this Floyd-JMM mismatch fight was announced, no one was really talking about this fight... I think no fans demanded this mismatch fight to get made... :rofl .
The biggest fight in boxing money wise is still De La Hoya v Hatton ( Let me explain sure there both as good as retired and washed up but there fanbase , plus Country v country selling issue and both whould still be the biggest draw in terms of sher numbers at the gate and watching then add the fact that regardless of there results or inactivity there together possible the biggest mainstream names in boxing to make a bout cross-over to the smallest of boxing fan's then add in the boxing fans like us who whould hate to see this cash cow by 2 fighters who have no buiesness fighting anymore let alone one another a good number myself included whould still Buy it