No particular reason why he should. I said that he could. I find that remarkable considering the team he plays for. Rossi looked like he was about to run away with it but his knee injury has brought some competition back. Berardi is second in the top scoring league now, level with Tevez on goals. They both have 11. That's only three goals behind Rossi's current 14, and he won't play much more this season.
Personally I think Llorente, Higuain and Balotelli will come on strong during the latter half of the season. Maybe Toni too.