Best Boxer?

I was surprised on how some well known sites ranked "BOXERS". As I was looking for records of the fighters from Wiki, I have noticed a site named "boxrec". I saw Floyd Mayweather Jr as their Top P4P boxer. I say "come on!" Floyd have fought a lightweight at welterweight division, and he had fought Shane Mosley on his last outing almost a year ago and you gave him the best P4P? Come on! Pacquiao just won his 8th division title. Can anyone top that?

As I saw the list of editors at the left side of the site, it made me think why? What is their standards of rating a boxer? I am not saying that they includes a factor that Floys Mayweather Jr is an American. But I just cant help it. I watched MMA Jon "Bones" Jones vs Mauricio Shogun Rua, and I heard people chanting USA! USA! USA! USA!, I also heard it on WWE people chanting USA@ USA! USA!... Its not bad though, but I have just observed that American's have a strong passion and very nationalistic. I am not suggesting that boxrec and some other sites does have a racial discrimination. But as I have looked the numbers of American editors on that site, it makes me thinks the chant I have heard during the Jon Jones Mauricio Rua fight.

I just think its just not fair for Pacquiao...