Yeah, the true test for him. Was he the man that made Barca tick or was it Messi? I guess we'll find out soon. I tend to give Pep a lot of credit. I think he gave them a great tactical foundation.
It won't be easy to get an English team to play like Barca though... only Arsenal, Man U, and Tottenham can be molded if you ask me. Then again, he could be a flexible manager that's able to adapt his own style to suit his team.
On the other hand, Mancini better not win the league. He's a sorry excuse for a "top" manager.