The midfielder was satisfied to pick up a point as his side battled to secure a 2-2 draw at San Siro, having netted the last goal himself against the still-undefeated visitors
The Giallorossi are unbeaten after 16 Serie A matches but the Ghana international feels that the 2-2 draw could have been even better for Massimiliano Allegri's side after their improved second-half performance.
Milan twice came from behind to seal the point, with Muntari scoring the second equaliser on 77 minutes.
"Roma were strong," he told Milan Channel. "We knew they would be but I think we gained an important point. At the end of the game we could have won it.
"But I am confident for the future - we are definitely on the right track now."
Muntari also discussed Sunday's Milan derby against his former club, Inter, and the Rossoneri's draw against Atletico Madrid in the Champions League last 16.
He continued: "Sunday is going to be an important game for us. I was happy during my time at Inter but I am here now and I feel great.
"Atletico Madrid? They are going well in Spain but we want to go through."