Are we talking of Humberto Soto here? IMO, people are giving him more than he really is. He is not a top notch fighter, and he won't stand a chance with the likes of JMM (WBA/WBO) in 135 (though he MAY have a chance with IBF champ Vazquez) what more with Khan (WBA) or Bradley (WBC/WBO) in 140.
Soto can be competitive against anyone except maybe Maidana. Soto can deal with anybody trying to box him I worry about a power puncher though Maidana is basically Antillion on steriods I think Soto gets knocked out.
Soto ain't moving to 140.
In the Demarco fight,showtime said that him & Demarco are cousins & won't fight each other & that Soto is indeed going to 140 because he wants to be the 1st Mexican to win titles in 4 divisions.