I wouldn't bet the house on him. But I say he has a decent chance. Any time you have a guy with speed, power, and determination, he's going to give anyone problems. Besides, Pac wasn't the most complete fighter a few years ago yet he was still winning big fights. I say if Berto can get a fight with Pac, go for it. He's got enough fights under his belt which means he's not so green that one beatdown is going to ruin him. I'd much rather see him against Pac than Pac-Margarito or Pac-JMM (at anything above 140).
A few articles in the UK said he was after the winner of Mayweather/Mosley after the fight on Saturday. I don't blame him for calling them out, he's not going to get many big money fights falling in his lap since he's not with Top Rank.