This is a period in time where the welterweight class is clearly the "heavyweight" class of boxing.

A Mayweather Jr. win over Juan Manuel Marquez is questionable.

As a reminder to those who feel JMM is a tuneup, have a look see.

YouTube - Juan Manuel Marquez vs Juan Diaz (special highlights) HQ

This guy makes vids that personify boxing. (sorry for the cross post thread)
YouTube - Boxing's War for Pound 4 Pound Kingship - Trailer