I'm not trying to somehow diminish what Ronaldo does this season (he's still quite clearly one of the world's very best players), but you do know that his main opponent for capocannoniere is 35 years old, right?
Quagliarella, with 16 goals, is having one of the best season in his whole career, if he does end up top scorer, all credits to him too.
Zapata, with 15 goals, is 27
Piatek, with 14 goals, is 23
Other players like Milik (12 goals) is 24, Immobile (11 goals) is 28, Icardi (9 goals) is 25, Mandzukic (8 goals) is 32, Dzeko (4 goals) is 32
Higuain, who has just scored 2 goals for Chelsea last match, has 6 goals in Serie A and is 31
Dybala, who is 25 and considered as world class talent, only has 2 goals