Its not that Zidane is better than Allegri, the man is a serial winner. Its what he does, he wins. Even a serial winner like him couldn't win a CL with Juve as a player.
Now we're gonna see if the modern serial winner, CR7 da can win the CL or if the Juve curse is too strong.
If CR7 and Zidane together can't win then the curse isn't just a theory, it's a fact.