Mile High Mike is the naturally bigger man than Bam Bam (not just taller; debuted at welterweight and has fought at 140/147 since...Rios debuted at super feather and has just eaten his way up), equally tough, and probably hits as hard. It's likely going to be a slugfest with only trace elements of the sweet science. :yep In a brawl I actually favor Alvarado over Rios with watered-down power (even though he can't make 135 anymore; he's in kind of a tight spot)
I think the decision will be unpopular due to their styles, but not necessarily undeserved. It'd probably be the first legitimate loss of Matthysse's pro career. Not that it would be a whitewash or anything, but I see Bradley boxing his way to close-but-clear.