I wouldn't say Roma is too strong as a team. Their midfield and defense are good enough but their attack is not strong enough. They have a lot of trouble scoring. Mourinho's match strategy is excellent so Roma's overall performance as a team is excellent. But if Roma wanta to continue this performance, they will definitely need to strengthen their attack. If the attack is not strong, it will be difficult to perform consistently well. Roma needs another experienced striker to strengthen their attack.
I have mentioned several times that Roma's defence isn't great, they always conceive goals even in games they could win comfortably but it seems things have changed now and the defence have improved. I expected much from the attack also with Tammy Abraham, Dybala and Origi but it seems that partnership isn't producing much goals after all.
Roma performance is not bad, they have improved. I was surprised that Juventus could not win roma . Roma has improving Much better than in the last season.