I'm only going off the stats on the TFC website, so don't crucify me if wrong
Last year, Earnshaw had 69 shots, 22 on net and 8 goals. He was our most prolific forward - hit the target on 31% of chances, scored on 11.5% of his attempts, and converted 36% of his actual shots on net to goals.
This year, and it's only two games, but it's what we have - Defoe has 9 shots, 5 on net, with 3 goals. His same stat split was 55%/33%/60%.
By comparison, lasts years golden boot candidates - Camillo 45/18/40, DiVaio 45/17/38, Magee 48/28/60
I think Defoe's stats are quite good thus far, much better than what we had last year, and leave some room to come down a bit and still be one of the top scorers int he league.