Juventus is a very good team so winning matches like that is no big achievement for them. this is a northemes mal and easy win for them. But yes it is good news for Juventus that they are going to overtake Inter very soon
Comparing Juventus' current performance with the early season performance, it is easy to guess that the team's performance is much more organized and strong than before. At the start of the season we saw that Juventus players had a lot of trouble scoring. They could not win by a large margin. But now Juventus' attacking players are playing very well. The performances of Vlahovic, Chiesa and Rabiot are very good. We are seeing more improvement in their performance day by day. Juventus now seem fully capable of challenging Inter Milan for the title.
Juventus did not actually start the season in a very good note but as the season progresses, they've significantly improved in their performances and that's a very welcome development for the club as well as the best way to keep themselves in contention for the Italian Serie A title. Like you rightly said, the attacking line of the team were not prolific at the start of the season and that's why they were finding it very difficult to score goals but since they picked up and became clinical in front of goal, Juventus have not just been scoring goals but have been winning matches.
Inter Milan I believe already knows that they have a serious rivalry in Juventus and i love the fact that the race for the Italian Serie A title this season is this interesting and entertaining