How can you arrange a fight when:
Pacquiao is the Pound for Pound King while Mayweather is the Lost and Found King?
Pacquiao is fighting while Mayweather is hiding?
...
Pacquiao keeps winning while Mayweather is whining?
Pacquiao walks the talk while Mayweather only talks and talks?
Pacquiao is a jawbreaker while Mayweather is lawbreaker?
Pacquiao is fighting men while Mayweather is bashing women?
Pacquiao is a congressman while Mayweather is a con man
Pacquiao is humble while Mayweather is humbug
Pacquiao is not on PED while Mayweather is on FED's list.
Golden Boy is digging gold down while Top Rank is going up to the top.
Pacquiao settles for 50-50 sharing while Mayweather wanted 100-0
They are poles apart so they cannot meet face to face!