Actually AC Milan is just three points away from Juventus which I don't see to really be a big deal in that Juventus can still be able to meet up or probably displace them depending on whatever the case maybe, if Juventus gets to win their next game they will be at equal points with AC Milan except if AC Milan aswell gets to win their own next fixture too but if it happens that they draw or win then Juventus will still be behind them.
The both team are currently on a tight position because they have a very close points but right now AC Milan is on a better chance because they have 3 point over Juventus and even if Juventus succeeded in wining there next match they may likely not going to beat AC Milan do to the fact that they will still be on equal points with AC Milan, and AC Milan still have a very good opportunity of increasing there points the more over Juventus because there next match will be against Fiorentina and from there performance I would say that AC Milan will win the match.
AC Milan are really in a better form now compared to Juventus, with AC Milan performance they can be able to maintain that second position in the table, they can only increase their points but cannot over take inter Milan because Milan have a huge points gap between them and the second person, so no matter how AC Milan try they can not close that gap because Milan are also in good form which they will not allow themselves to be beaten by any team now. Currently I will say Inter Milan are the strongest team is Serie A followed by AC Milan them Juventus, but Juventus are facing low performance right now because in their last five matches their performance was poor because they only won one a draw 3 and lost one, this is poor performance to my observation.