Pacquiao's 39, tiny, and shot. Danny's faded and just struggled w/ a shot Rios. Thurman's not the monster people made him out to be.
Best to worst: Garcia, Pac, Thurman. I don't think he beats any of them though. His best bet is to fight Pac because that'll make him the most amount of money.
Matthysse will beat none of those big name fighters because he is past his prime. He'll get beaten up by all of those 3 fighters or even get KO'ed.