Eh, always awkward to compare between divisions separated by 30lbs but I'll go with Dawson. Obviously not based on resume or accomplishments, simply based on I think he's the more talented fighter at this point. Though Shane is still awesome.
Chad "black Goofy" Dawson is no wizard, but Mosley is eons away from his best. He is just a notch on someone's belt these days....waiting to be sold to the highest bidder. Mosley was a very good fighter, and Goofy is a good fighter, which is slightly more than what Mosley is these days..
Mosley is "just a notch on someone's belt" WTF are you smoking man. For everyone who beat Mosley, Mosley is the best win of their entire career. "Just a notch on someone's belt" doesn't apply here. Even for Mayweather, beating a 2010 Shane Mosley would be the best win of his entire career. Mosley > Dawson and if you put Mosley in against old guys like Tarver and Glen Johnson he knocks em out or beats em easy. What Dawson did to Adamek doesn't compare to what Mosley did to Margarito either.
He's a better boxer than Pac is his skills are sublime. With that said Pac is the better P4P talent and fighter.
1. Floyd Mayweather 2. Chad Dawson 3. Andre Ward 4. Devon Alexander 5. Timothy Bradley 6. Andre Dirrell 7. Paul Williams 8. Andre Berto 9. James Kirkland 10. Cory Spinks 11. Jay-Z 12. Tavoris Cloud 13. Bernard Hopkins 14. Steve Cunningham 15. Roy Jones Jr 16. Manny Pacquiao