Different to playing in the PL.
I don't think his ability was in question, whether he could adapt to this league was another matter. We're talking about a bloke who shone in a league against the likes of Torres, Villa, Eto'o etc.
The fact is he still has to prove he can perform in the PL. If not, he's useless to us regardless of his performances in Spain or the Argie leagues or for his NT.