Balotelli without all this crap that he pulled over the years could have gone to become even better than Higuain IMO - He has the body of Drogba, he definitely has ball control skills, he can definitely shoot inside and outside an area with great power..
I remember him saying he wanted to be the best in the world and he might not become the best in the world as long as there are Messi Neymar and if he continue like that you can add Dybala but he could definitely become the best Striker..
It might be too late for him to do so now but if he goes to Napoli I see no reason why he cant bang goals for fun.. Napoli are an attacking team that makes their central forward score lots of goals and thats why Higuain broke the record there (and the fact he is a world class player of course...). Look at Mertens - Yeah he has a killer instinct in him but do your really see him doing that well if he played for any other team?!
Take us for example - If Mertens was part of our team he wouldnt enter the first 11 and Im not even sure he would be a great sub...
There are teams which their setup could help you succeed in a certain position.. Napoli has it with strikers while we obviously have it with defenders...