#1 The fight is not confirmed. Soto is a great SuFwt, and I can't see him giving up after a loss to Guzman. Joan is probably the only man that can beat him at 130.
#2 David Diaz has an obligation to fight the Interim Champ (whoever that is) in 2008. He may also have a unification with Juan Diaz, so why would he fight a 130lb'er on the come up?
#3 Joan Guzman wants to unify at 130 before moving up, so that is why he won't come knocking at Ltwt (yet).
Bookmarks