Mourinho does pick his clubs well - he won't manage at a club he has no chance if winning a trophy at.
And he's an absolute dick. But I think it's a massive achievement to best Barcelona. Maybe I'm overrating them. If Mourinho's messiah complex grows, he will hopefully take on a team on Evertons level and we'll see. He seems to be a real man-manager and will make the most of te players he has.