Floyd Mayweather Jr. Coward Of The Year

Floyd Mayweather Jr has been running away from Manny Pacquiao in the boxing world for the past year. Mayweather is a boxer from Las Vegas who has done everything to run away from Pacquiao during the past year. First, it was a difference of opinion on drug testing and in the past couple of weeks, Mayweather has been called out by boxing promoter, Bob Arum, also of Las Vegas, to fight Pacquiao. http://www.lasvegassun.com/news/2010/jul/24/manny-pacquaiao-fight-antonio-margarito-nov-13/
I am not a boxing fan but follow it a little bit. From my perspective, Mayweather doesn't want to fight Pacquiao because Mayweather has a lot of endorsements, like about $20 million a year. Who or what endorses him, I have no idea. I've never seen an advertisement with him in it. I highly doubt it was a roller rink endorsement (those who live in Las Vegas know what I am talking about)
So, Mr. Mayweather Jr., you may be a very good boxer, but you are not the best when turn tail and run away from a competitor. Do you think Muhammad Ali would run way from Joe Frazier or George Foreman? Of course not. So, why would you run away from Manny Pacquiao?