Oh, this is for 2008, not for 2007/08?
If it's only for 2008 then it's 50-50 between Zlatan and Del Piero. Zlatan didn't score 9 fake penalties in 2008 (he scored most of them in 2007

). Actually, he was great in 2008. Scored 19 goals in serie A and only 3 from penalties. He also brought the scudetto to Inter in the last round and he's keeping them on top this season.
Del Piero was just as good, if not even better. Ale scored 21 goals in serie A, 4 from penalties.
It's a close call, but i'm on Del Piero this time.