It's not about the quality of the players, it's about the managers' plans. Lazio are using high pressing, Juventus don't even try, because they were told not to. They are waiting until Lazio are out of steam. To make the usual 1:0 while conserving energy. They don't care how all of this looks like, it's all about 3 pts. Considering the situation in Serie A, we should probably accept that and shouldn't jump to premature conclusions.