I agree with you about Berto being a more intriguing matchup.

I don't think either of them has the tools/skills to beat Mayweather (barring Mayweather getting old overnight), but at least with Berto's handspeed and power he has a much better puncher's chance than Guerrero does.

Both of these guys get potshotted and outboxing by Mayweather all night IMO.