That is true and they will continue to be great but there is no guarantee that they will win all their games. I think it is important to also remember that Milan and Inter has been not so great recently and that doesn't mean that they will continue to be bad neither, maybe that was then and it's over now and they are going to be better soon? Maybe those teams will end up beating everyone else as well.
We do not know that and I believe that Juventus, even if they end up winning most of their games, or even all of their games, could still end up not inside the top four because the top teams may end up winning their games as well, which would make Juventus fifth instead.
I don't know how Juventus became this bad that, winning games looked as though they've done something really great. They've gathered a little momentum lately but, there are chances that they could still encounter some loses on the way. I don't see Juventus to be doing any better than Inter Milan, they are leveled as per performance to me.
Napoli remains the only team that has distinguished themselves in the league as we have it now and no other team. Can't say I expected them to put same energy in the rest of there games though as, the league looks already won. They just need to win few games more gto seal the league.