YEah, I wouldn't write him off just yet. Abregu was being overlooked going into this fight. He seems to have that incredible power all Argentines have in, and around the welterweight division.
He's got that "technical puncher" style similar to Matthysse which is very effective against boxers. It takes away a jab, and inhibits the distance boxers like to keep on the outside.
Argentina has really exploded back onto the boxing scene here lately.