Unlike last season both teams are not currently performing very well though Inter are in the 2nd place in their table but I dount if Milan would be able to qualify for the next round due to the tough competition in the Group F and they're currently in 3rd place with just 2 points, Milan didn't create good chances yesterday and that's why they couldn't secure the 3 points yesterday they where even dominated by Borrussia Dortmund in everything and their attackers couldn't do much to secure a winning.
However thank goodness they're not performing poorly in their domestic league game both teams are in 1st and 2nd position respectively and are currently the strongest teams in the league so far, and I think either of them would win the league trophy this season if Napoli fails to defend the title.
It must be admitted that group F is more difficult than the other groups, AC Milan has not been able to win and has not even been able to score a goal in the UCL this season. Milan needs to improve its performance and create lots of opportunities in the next match. If this is not achieved, there is little chance that Milan will qualify for the round of 16. Regarding Inter Milan, Simone Inzaghi squad was considered more promising in two matches. One draw and one win, even though they are currently in second place in group D, I predict Inter can qualify as group winners.
In Serie A, both clubs have the same points, but the statistics for the number of goals conceded by Inter are fewer, Inter leads the standings and is followed by their city rivals in second place. I think Napoli will have difficulty defending the Scudetto this season, I agree with you, Inter and Milan are the favorites to win the Scudetto at the end of the season.