Please bring me a coach who has done better than Guardiola has after a treble winning season.
How do you improve on near perfection? Do you think if Heynckes had stayed, he'd have done better?
Let's not forget that Heynckes won nothing in his first season, and even choked at home to a Chelsea side that were no better than Bayern at home. People conveniently forget that, and only remember his last season.
Guardiola has turned Bayern into a dominant team, one that goes to places like Real Madrid, and Real feel they have to change their normal style of play to respond to Bayern. That's how dominant Bayern have become, teams now adapt to them, and not vice versa. That is one of the reasons I believe Pep is a world class coach, he forces others to respond to his style of play. Coaches from Mourinho to Ancelotti have to change their playing styles when they face Pep's teams.