I was obviously joking (I even added a text in white

). While the league's style can of course be decisive in some cases, generally I see no reason why shouldn't most of the quality players from EPL or La Liga not make it in serie A, and vice versa.
Zlatan's, Sneijder's, Kaka's, Cambiasso's and Samuel's failure in La Liga and their good/great performances for Italian teams is creating a wrong opinion that those players make it in Italy and failed in La Liga only because the Spanish league is much tougher.
Or Sheva in EPL.