I think both fighters beat Berto, but he needs to step un in class. Right now, he's rated in the top ten and he needs to fight a top 10 fighter so we know if he belongs there. Even if he losses it will be a learning experience for him because I haven't scene any improvement in his last few fights. Maybe Rodriguez can push him a little. So far, he's just powering his way through C grade fighters. Alvarez would be a good fight for him, too.
Against Clottey he would need to outbox him, because Clottey is stronger. Against Collazo, he would be up against a more skilled, slicker guy. Either way, he would have to adapt his game or lose. Personally I think he's a bit overrated.
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