I'm curious; from a legacy standpoint, do Floyd and Pacquiao strengthen eachother?

For instance --

Mayweather beat Marquez decisively. Under normal circumstances, this would be a match easily dismissed as anything of value. Marquez was significantly above his best weight, advanced in age, and supposedly past his prime.

He looked nearly as good as he ever has in his third showing with the Filipino superstar however. It is hard to maintain that the version Floyd fought was significantly worse or the win worthless.

Pacquiao beat a Mosley that looked old in that ring. He was hurt early, and seemed to flinch and be gunshy against Manny's sledgehammer blows. He fought to survive, and Manny seemed to grant him that small honor out of pity. Not much in it, right?

Only a year earlier, though, Mosley stunned Mayweather early. He had, however small, a chance to win in that round. He could not finish it, Mayweather cleared the cobwebs, fought an offensive fight, and walked Mosley down, winning handily on all three scorecards. It was a good showing by Mosley, and it was only a year before his match with Manny.

Pacquiao also blew out De La Hoya, Cotto and Hatton. All three fought at least respectable fights with Mayweather, showing their class. Without the matches against Mayweather these could more easily be regarded as wins that hold little value.

Man, these two have had a lot of common opponents.

What is your take on this?

(Also, am I the only one who thinks Joshua Clottey would have been a tough fight for Mayweather?)