Actually, if you add CL and Coppa, you'll see that we scored more and we conceded less than Inter. We played 2 more matches then them though (which is a disadvantage regarding the part about the conceded goals).
We scored 51 in serie A, 4 in Coppa, 14 in CL. This gives 69 goals.
Inter scored 54 in serie A, 5 in Coppa, 7 in CL. In total they scored 66 goals
We conceded 23 goals in serie A, 2 in Coppa, 7 in CL. In total 32 goals
Inter conceded 21 in Serie A, 5 in Coppa, 9 in CL. In total 35 goals.
-----------------
In case some asshole wants to accuse me that i'm saying how we have a better defense and better attack then Inter, then i have to say that i wasn't doing that. These are only the official numbers and i'm sharing them with you.