Guardiola is a rare case, where he is an obsessive coach regarding defensive aspects of the game while creating very offensive sides, that prefers to mold players into his system than having or buying established super stars in his teams , he has a great eye for great/huge talents and for players that even not being precisely huge talents, can give him sthg that he can have in his team without disrupting too much his dressing room and mostly his leadership, wherever we like his treatment of a certain player or not.
He obviously found oil in Barca when he took charge but at the same time he had the balls to dispatch an already established Exxon while starting his own Oil company with his own group of players, maintaining and giving roles and confidence with the ones he liked for his system.
Nobody would invent a Messi, these geniuses are born, but he bet 200% on him while letting go huge players, already knowing how self destructive of a club Barca can be. He also convinced very fast a whole group of players to play an style that wasn't there with the previous coach (BTW Frankie was great, but he more than probably got tired of the whole huge club stuff world Pep thrives on).
He sometimes can negotiate with huge egos and extraordinary players like: Messi (the later ONE, at the beginning he just placed a huge bet on a youngster, no matter how Genius he was born, not every coach do that and does it right, he let the kid go to the Olympics, he let him have some outbursts, he let him know anyway that he was in charge and that he would let him play with liberty as long as he doesn't go over the top, while giving a extremely heavy 10 on his back), Henry, Aguero (one of the few things I don't agree with @ikerquesadillas here about Kun status, tastes aside, I feel that for moments some posters were dragged by some silly arguments that even made Klopp receive some unnecessary hit also) and cia...sometimes he will clash too much, but he won't usually do the mistake of many other obsessive systemic coaches tend to do in trying to ask or convert certain profiles of players in sthg they want them to be like Van Gaal and such.
He will try to find common ground, or he be clear that he doesn't want him there, he might make mistakes when buying like Ibra (a bet in reality that unlike the Messi and Iniesta one "failed"), but the great majority of times he KNOWS what he is buying and what to expect and what liberties to give to those and what not.
He swims in the middle of obsessive nut jobs like Van Gaal, Bielsa..less nutty but obsessive and extremely pragmatic ones like Simeone, Mou and have some old guard more relaxed player approach in occasions a la Ancellotti and such.
In this aspect he is similar to Klopp, in this sort of management, they would have their system, their requirements, they do not like to be a lyric coach a la Menotti, Zagallo, Basile, but they won't explain Messi, Pele or Maradona (or leaving geniuses aside, huge players) how they have to play, they'll give advice, tools, they won't try to convert Di Maria in Pedro.
In any case JUST only ONE GOAT coach is silly as in many ways it's with players, nor football was invented 20 years ago, nor everything a Klopp, Pep or Mou does it's innovative.
Finally, the amount of silly arguments against the bald one has been painful to read, this doesn't mean to even like the dude, or even having him as preferred coach, I do not like tons of decisions he took in his career, but would be silly if I think that someone can't consider Pep the best or among the best ever.
Yet there is also lot of not even that subtle subtext of certain posts more related to CR7 and the whole Messi or Barca vs Man Utd/Madrid stuff than anything else. In the meantime many here will be surprised that Alex it's not considered the non plus ultra best coach ever outside of England or more precisely Man Utd, it's not sthg settle in stone as I've been reading here and in the history of the game for different reasons many coaches were pivotal even in the tactics of the game without winning everything and a large etc.
