It is actually still a mystery why Juventus performed so poorly last season. Of course they will miss Ronaldo, but could it really just be that? I mean they've been champions of Italy for the past 10 years, and they were without Ronaldo's presence. Perhaps there was also a bit of underestimation involved. They are favorites for the coming season, but Inter Milan are certainly no less than Juventus at the moment, I think. But anything can happen in the transfer window.
I think this is a quite natural thing because it is quite natural for a team to experience ups and downs in performance and this season not only Juventus but there are still several other clubs as well, actually like Atalanta here.
Juventus is currently in a transition period and if you look at the start of the season and the end of the season now of course there have been significant changes that have taken place and this is certainly very good for Juventus now.