He promoted Real Sociedad B you know. He has shown incredible flexibility by going in from a fully defensive league to a full offensive league. He has shown he can play 3223,433 and his current 3412 seamlessly. He has studied under Mourinho at his peak, Pep and Ancelotti. He took Leverkusen last season from the end to where they should have been.
In this season he has shown his flexibility and the ability to switch tactics on the fly and is undefeated everywhere, despite playing both RaBa and Bayern. It is obvious that he would slip in in January and February due to AFCON, but so far there is a lot to be hyped for.
And well, Zidane dog walked everyone and he barely had any experience with senior sides aside from some experience as assistant manager when he started. Experience doesn't equal tactical prowess.
Good graph, easy to understand, the blocks look like condom packets.