lets say it as it is.. Roma got Gasperini as manager and knowing the type of football he likes his teams to play Roma are waaay too underish its almost unreal, its not that they play defensive on the contrary its just there's not much quality up front, lots of central mids and no wingers has been a huge issue but good wing backs have salvaged a lot of points so far. Gasperini wanted 1 or 2 more wingers but directors couldnt find any bargains as club cant afford to spend excessively.
Then you have Como who are a spanish side playing in Italy basically, apart from their stadium being in Italy there's nothing italian about them really, in my opinion by far the most attack minded team in the league, granted, lots of inexperienced youth there so you cant really say they are top class but wanting to play attacking football is something foreign to italian stadiums since the 90s
if you look at the stats yes it points towards under but if you take a qualitative approach then it points towards a more open game than odds suggest. My read is the ball will spend more time in respecive penalty areas than it would around the center.. and despite Como being more than capable of scoring Roma can cover this by themselves because they got the advantage in experience on the pitch and on the bench, plus the fans