I agree with you about your comparison between Zidane and Guardiola. Zidane has an aura and players respect him more for his achievements as a player himself than as a coach. I know that he won the Champions League three times, but a lot of coincidences have led to that winning streak as well. It wasn't because Real Madrid dominated the Champions League throughout the knockout stages. It was in quite some games the case that they were the team with a little bit more luck than the others. Taking home three titles just like that will probably not happen again anytime soon. Guardiola is a real coach. Nobody talks about him as a player anymore whereas when I remember the name Zidane, I instantly think about him as a genius player, not as the coach who won the title three times.
Zidane and Pep Guardiola have their own uniqueness, even though Zidane was able to win 3 Champions League trophies but he only got it with one team namely Real Madrid, unlike Pep Guardiola he was able to get it with two different teams namely Barcelona and Manchester City even though it took enough time long ago gave City its first Champions League title.
But Pep Guardiola is able to win domestic titles with three different teams at the moment compared to Zidane only winning with Real Madrid, Zidane is only a manager for one team for now and there is no chance for Zidane to return to being a coach in a different team. PGS rumor will sign Zidane have get Luis Henrique and looking Zidane back as manager next season seems not possible yet.