Juventus had Allegri working on this team for a long time but during the time when he was working there he couldn't get good results and got fired from this team and that's why they hired Moota, While Motta got amazing results in Juventus so far and he got the team improved once he joined them but it is not enough yet
It is not the right time to compare Allegri and Motta. At least, we need to wait until this season ends.
However, it is pretty true that Motta has done great job in Juventus so far. Even if Juventus got 1 draw in 3 early matches, they are still in the top of Serie A standings with Inter Milan. Luckily, Inter Milan also got 1 draw, so they have the same points now. But Motta needs a harder effort if he wants Juventus winning the Scudetto. The most difficult thing is to keep the consistency of Juventus game. In last season, they also performed well in the early season but they started performing badly in the middle of the season.
Is true that is too early to compare Massimiliano Allegri and Motta because there number of years of coaching Juventus is not the same and even if Motta seem to have been making some good impact on the club but we cannot really come to the conclusion that he is the best coach that has ever coached Juventus because the only way to be sure is at the end of the league, so if eventually he leads Juventus to achieving a major trophy then we can say that he is the right coach for them.
Massimiliano Allegri is also a good coach that has also created a good record in Juventus even if lately he was having some difficulties in bringing something new to the club but we cannot forget how far he lead Juventus during his early time in coaching Juventus, actually if I'm not mistaken Massimiliano Allegri started coaching Juventus since 2021 and that's when Juventus was on there good shape, so he has also been a very good coach for Juventus.