Some of the french posters here who watch Ligue 1 regularly have said they think Ibra is in his best physical condition since he went to PSG.The doubts are pretty simple to understand: In the history of the Premier League, how many good seasons have ever been achieved by a striker 35 or older? Sheringham for United is arguably one. I'm not sure how many more.
Zlatan is Zlatan. He is a one-of-a-kind player and so different rules, including with respect to human aging, really might apply to him. His last season at PSG was certainly plenty good, even if against very weak opposition much of the time.
But I don't know how anybody couldn't have serious doubts when considering the track record of older strikers in the Premier League. 35 is fecking old for a striker, unless you're just hanging around Serie A like Totti/Toni. Even legendary ironmen strikers like Shearer or Wright (or Raul for that matter) were basically done by 35.
It's strange how he's having his best season at 34 but it seems like he certainly has at least a year or two left at the top. I don't think the PL has ever had a 35 year old playing at such a high standard so you can't really make the comparison with other old players.