I still say stylistically he gives MOsley and Mayweather honest challenges.

Mayweather because he is also a good jabber, and as he showed against Forbes he can fight against this type of fighter without becoming wild.

Against Mosley because MOsley doesn't have a great jab and he leaps in with most of his hooks from far away, and it only works against guys slower than him. I think Berto is better on the outside as long as he wouldn't load up. I don't think he is better than MOsley, but the styles match up well for him to face an orthodox fighter. It also helps that Mosley is a trully fluid fighter, and neither of them seems to know how to shorten up punches to garner better accuracy.

I think Pacquiao have difficulties with Berto's speed for awhile, but in the end I think Pacquiao is just too much offensively for all the mistakes Berto makes defensively.