Very good counter attacking side i agree, the transition from defense to attack is quick after they win the ball is quick but it also helps them that the team attacking them is not organised like city were today.Poor tactics from city they were clearly a man short in mf.
Look at the heatmap of both teams city possession based with players interchanging positions, like how we play and look at roma how fragmented and disconnected their play is.
If you remember our game last year against roma which we won 3- 0 at home we had 44% possesion.
I just don't see them as well balanced as in i dont think they are effective when they have majority of the ball/possession.