He has and I'd never dispute that, however the bar has been raised by Liverpool and City respectively, tactics have changed since his glory years as has the quality in the prem.Brian Clough did it but he was only successful at clubs that he could build from the ground up around a group of players who owed him their careers - he couldn't hack it at Leeds where he had a group of established internationals who didn't owe him a thing as illustrated in The Damned United.
Jose has consistently done it with established internationals and some of the biggest clubs in world football - Serie A and La Liga titles don't grow on trees and I have absolutely no doubt in Jose's ability to handle the big boys.
Like I said I'm excited by what may come, I'm just adding a note of caution. When he's been really successful he's built teams quickly with substantial investment, I'm not sure he'll be afforded the same at Spurs, how he copes with that will be interesting. I never questioned his ability to deal with the big boys, but I do over a sustained period of time based purely on his track record.