Can a featherweight not named Pacquaio beat Berto?

I wouldn't even take Marquez over Berto, who I think is better at the weight (and clearly a superior fighter) than Guerrero. Guerrero just isn't a welterweight, I think his fight with Alydin proved that. Berto is just too explosive and although his chin is highly suspect, Guerrero has like zero pop at WW. I will concede the fact that Guerrero is the smarter fighter and far superior technician but I just think he is at too far a physical disadvantage. Guerrero will need to fight like the perfect fight to win IMO.

I'm not a fan of Berto, I think he has been gifted many BS fights (and money) on HBO because he is represented by Al Haymon. I also don't like the fact that he was caught cheating. However, I think he beats up the smaller Guerrero. I hope I'm wrong because I like Guerrero and he seems like a genuinely good guy.