Initially, many people doubted Guardiola quality after being promoted to head coach in the Barcelona first team, because at that time his status was as a coach at Barcelona B, especially at that time Guardiola had only started his career as a coach for one year. The opportunity given Barcelona was not wasted by Guardiola, he immediately brought Barcelona to win the La Liga title for three consecutive seasons. As a newcomer to the world of coaches who were full of competition with great coaches, he managed to make Barcelona one of the best clubs in Europe at the time.
I think Guardiola is better than Zidane who has only coached the only club, he was able to win the treble winner with two different clubs. Behind the success he has achieved with Barcelona, Bayern Munich and Manchester City, he still has the task of helping Manchester City become the reigning champions on the UCL stage. The squad that Manchester City currently has can be polished by Guardiola with the tiki-taka style that is his trademark to become a frightening club in the EPL and UCL.
Both Zidane and Guardiola certainly have their own strengths and weaknesses. There's no denying Zidane's achievements when he was active, he was one of the best of his time, and surpassed Guardiola's achievements. But during his time as coach, Guardiola slightly surpassed Zidane. In fact Pep proved with Three different Clubs in Three different Leagues. Barcelona in La Liga, Bayern Munich in the Bundes Liga and now Manchester City in the EPL, he can win with these three teams. So in the world of coaching Pep deserves appreciation for surpassing Zidane. With Zidane's break from the world of coaching, the best competition between the two has automatically stopped and only starts again if Zidane trains one of the clubs in the EPL. It will be interesting if he returns to coaching and takes part in an EPL club.
But it seems that Zidane will not train any club in the near future, until now there has been no serious news regarding Zidane's future, PSG who are interested in his services, recently appointed their new coach next season Luis Enrique, automatically adding the puzzle of where Zidane will be anchored while Guardiola will stay with City next season.
there is no doubt left that guardiola is an excellent coach, but he was also lucky to be coach of teams with a lot of money and willing to invest heavily to have all the players he asked for with the aim of winning the champions league, just see that he he arrived at manchester city and spent many years in manchester city organizing the team and only after that he started to achieve many things with manchester city at the england level and it took many years for him to have a team capable of winning the champions league
So even though Guardiola is a good coach, even he needs a lot of time to organize a winning team. with that we can see that guardiola would never fit in small teams with medium budget and teams that want to win the champions league quickly like PSG, while the case of zidane was something that caused a lot of surprise and many people, but maybe we can say that he found real madrid while they already had an excellent squad and with his strategies the team managed to win everything they could. zidane's biggest test would be if he had to coach a new team and in that part he needs to be very cautious, a mistake by him in coaching a problematic team could ruin the great image he has, that's why in my opinion he is excited to train any team