Well, he is right about the pace thing. Its important to be and play quick in England, more than in a lot of country. As for it being overrated, that is his opinion, but his time in England was certainly not the one in which he scored the most goal of his career, thats for sure. :P
Zlatan Ibrahimovic said that the quality of the Premier League is "overrated" but very few can handle the pace required to succeed in English football's top flight...
Considering he has played in Serie A, La Liga and Premiere league one could argue that he knows more than most of us...
Is he right?