roma started off badly because of the injuries and the death of the chairman left them without moral. After the chelsea 3 - 1 win they improved dramatically and caught up to fiorentina, its only after they lost to arsenal in the cl , did they lose moral and stop playing.
Roma kept the same team, and had a bad start. AC Milan have gone WORSE, selling their star player and losing their captain, not to mention no real buy this season. Geona have lost two of their best players too and fiorintina have yet to buy any good players. Not to mention Roma are out of the CL and will have more time to rest over the likes of milan.
my two cents anyway