Mancini for Hughes was a complete no brainer whatever the little britishers thought. One had a pretty impressive CV, the like of which no previous manager bar Kendall and Mercer could come close to. The other despite what he and his supporters suggest is completely clueless, both in terms of tactics and psychology, his own as well as his players.
When it comes to Mancini and Guardiola it is not so clear cut. Mancini has now won league titles in two countries. This tends to separate the men from the boys. Guardiola has given us some sublime football based on three players the like of which we will wait a long time to see again.
There are two questions here. Is Roberto capable of winning us the CL? And is Pep capable of recreating the somewhat unique set of circumstances at Barca, in another club, in another league?
For me the jury is out on both. What I do know is that Mancini is quite capable of delivering sustained success in the EPL.
So on the basis of this I would not swap him for Guardiola. There is probably only one cast iron guarantee in world football management but does Mourinho want to come to us and how long would he stay.