that's not the question though.
Cicero's point is that the 5 you mention have good quality around them, hence they have better opportunities to score goals.
Belotti doesn't have that luxury around him at Torino, therefore it's even more of an achievement to score so many goals and be up there with the 5 you mention in terms of goals scored.
It's like Defoe at Sunderland. Good striker in a shit team getting goals is probably more of an achievement that Ibra getting goals in a good team surrounded by excellent talent.