Who would enhance Mayweather's legacy most? Khan or Brook?

[B.U.R.N.E.R]

Both of these fighters do as much for Floyds legacy as a fight with me would.

[Adamjr91]

About the same. A win over Brook or Khan would do very little for Mayweather's legacy.

That was wrapped up when he beat Cotto at LMW and sealed when Mayweather cleaned for the floor with Pacquiao.

[SlySlickSmooth]

Not much. Khan has done jack **** and looked bad in his Algieri fight.

Undisputed has a nice ring to it and although he has the best single win at 147 aside from May and Pac, Brook isn't established as a great WW.

[LacedUp]

Both of these fighters do as much for Floyds legacy as a fight with me would.

would you also make Mayweather undisputed champ?