Hahahahahhahahaha are you even serious? Pep was the first coach ever to become the champion of Barca B. He won the UCL with Barca, he got the most points and goals scored of Bayern ever, he sort of created Iniesta, Xavi, Messi, Busquets, Pique, Kimmich, Rode, Pedro, David Villa, Bojan, Dani Alves. He made Abidal one of the best LB's to ever have lived. He put Lahm on the CDM position after years of playing LB, and it turned out to be fucking genius. He won several league titles, cups, supercups, international cups with Bayern and Barcelona. He was already wanted by national teams (e.g. Argentina) and other top class teams such as PSG.
He was SO good, that after Mourinho got fired at Real Madrid, there were rumours that Real wanted to buy out his contract and get him to be their coach. Even though they are their biggest rivals and Guardiola is a catalan. Just remember that.