That's the point of forums though, to make those arguments about being the best manager and what decisions are made. Pep was regularly subjected to criticism of his game and decisions while at Bayern. He was even referred to as a "tactics freak" by former Bayern coach Omar Hitzfield, saying:
"Guardiola focuses only on the tactics," Hitzfeld told Bild. "He is a tactics freak who is engaged in game situation day and night, but in interpersonal relationships, he has not focused on the team.
"He has had almost no meetings. He has sealed himself off even from the media.
"At this point, Jupp Heynckes is as successful as Guardiola, but he can still change that, he can still win three titles like Heynckes did."
Not trying to put down Guardiola at all, just making the point that not everyone believes his style is the best in the business. Heynckes has won the CL with Bayern in 2013 with the same team that Pep inherited but he was only able to get them back to the semi-finals for 3 years straight after that. So it would be a little presumptuous of us to assume that simply getting Guardiola has made us a powerhouse overnight and that we as fans can't question his decisions without attempting to undermine him.