You might have a point...Manny's trophy wins have been against "stay in the kitchen" guys like Morales, and outclassed guys like ODLH and Hatton.
I just don't think Moseley has the chin to take a beating, with his age. Erik Morales is widely considered to have the chin of a recklessley brave idiot, and he chased manny around for 9 rounds beating him up, and Pacquiao still had it in him to blast him out in the 10th.
I don't think Shane, or anyone in that weight area except maybe JMM, has the mind to fight the fight to beat Manny. You need a Hopkins/Calzaghe mentality, show off for the judges, swivel at the waist, keep your chin covered, and wait for a liver shot. I can't see Manny losing other than a nasty hook to the liver.