I think he's done a brilliant job at Catalan and has proved a perfect fit for that club. However, i don't think he would necessarily be able to replicate that at other clubs. I think being a Head coach especially at bigger clubs requires a certain way with people, call it charisma if you like, which frankly most of us don't have. I think in a strange sort of way being at a foreign club with the language differences almost works in his favour. It reminds me of Steve Maclaren the football coach who managed to win the Dutch league with a fairly unfancied side but who has never really cut the mustard managing sides in England even though he widely recognised as an excellent coach.
So, not a great coach for me because as well as he has done at Catalan, he's not really been able to match what he's done there anywhere else.