If the same Shane who barely beat Philip Holiday shows up for this, he loses. That said, Shane warmed to the business of 135 in due course. Of course he never faced anyone as good as Buchanan at 135...I think Shane was hard put to make the weight Close, close fight, mainly because of Shane being "tight" at 135. At 147, a full 12lbs north, he came into his own, but at 135, with the same-day weigh in, Buchanan can beat him over 15, for sure.
I would lean slightly, very slightly, with Mosley over twelve rounds. I think his strength, combinations, & overall offensive package (this was his best weight, IMO --- better even than Welter) might just get him home against Buchanan's counters & slips. Very close fight between two top-thirty all-time 135lbers.
Very good matchup... I tend to agree that Mosley's ofeensive firepower and fast punching would get him more of the rounds, but he'd be made to earn it and Buchanan would have his stretches where he'd appear to be mastering Mosley, only to have Shane pour it on again Good fight