Re: (Facts and Manga pages) the Byakugan is the 2nd strongest dojutsu
Great work. Byakugan beats 3 tomoe sharingan, but once MS techs start flying it becomes a defensive game. Rotation cancels Amaterasu, and the Byakugan sees through tsukoyomi (genjutsu...confirmed by Kakashi). Susanoo is clearly weak in the back wouldn't be surprised to see the Byakugan blindspot be a weak point on Susanoo due to the possible relation between the two dojutsu.
The Byakugan can't predict what specific attack is Comming, but with an intelligent shinobi, one could witness the build up of chakra, and prepare a counter. This allows for techs like Amaterasu to be detected (build up to the right eye plus the pressure in the air).
It is also good to mention that the maximum climb to a Sharingan on one's own is just the 3 tomoe sharingan. The MS requires you to kill someone close to you and the EMS one must take their sibling's eyes.
The Byakugan's insight into chakra allows for the insight into which attacks are about to be used in order to provide counter measures.
The Byakugan most likely doesn't beat Perfect Susanoo in one on one combat simply because of PS's OP destructive prowess, but being able to see chakra configuration, finding the weak spot is entirely possible.
Rotation csn only be stopped if the spin is disrupted meaning only possible ways to break the spin would be to use the Susanoo sword or arrows against the direction of the spin in an attempt to counter act the rotation of chakra. Amaterasu obviously gets stuck burning chakra and not the Hyuga.
Overall the Byakugan if used right has just as much potential to be devastating on a battlefield as the Sharingan. The Byakugan is more of a calculated and precise weapon on a battlefield such as a sniper rifle or a marksman's rifle. Focusing on one or a few targets the targets are quickly dropped with precision. The Sharingan instead is like a rocket launcher that in most people's hands csn decimate a battlefield. An expert marksman can easily be as destructive on a battlefield as the man packing the rocket launcher if not even more so (a marksman can carry more ammo than a heavy weapons specialist after all).