Some better comparisons may be who'd you take between Giroud, Higuian, Benzema, Dzeko, Costa
Tougher question which would probably have a wider array of answers...
I'd go with Costa on current form... Although, I think Benzema has the most natural talent of those...
I kind of agree. Costa may end up being as good as his start of this season but I'd wait to see more.
Benzema may end up being a title deciding buy for someone if Real sell him.
Dzeko is the curious case for me. I end up reading a ton of people talking about him since Roma forums are full of Bosnians due to Pjanic. I usually defended Mancini a bit in the vehement attacks playing him consistently incited (even though I think he's an extremely talented striker and elite finisher). It's been perhaps more telling that Pelligrini seems more and more to favor Negredo just like Mancini favored Tevez.
Still think Dzeko would be near the lead of goals scored if he played all the time but the question of his build-up/all around play surrounded by other elite attackers has only been emphasized this year.