Board Thread:Theories and Speculation/@comment-26636534-20150710195521/@comment-26665178-20150714005007

Compared to sasuke itachi's chakra levels were low, sasuke could maintain fullbody susanoo for long periods of time, while using amastera's too (Before hagromo chakra), meanwhile after a tsyomi and an amastera itachi could barley use torso susanoo.(to be fair tho he was also blind asf and didnt have EMS, and was terminal.) But, with regular MS Sasuke was using susanoo for long periods of time(torso susanoo) vs danzo and still able to fight well.