Well the susanoo is the stationary/offensive wall defense
Its a bit like gaaras sand though with some of its weaknesses and those of the rotation
Susanoo(Sasuke/Itachi)
Pros:
protects the user from almost all sides
has offensive capabilities
size and power can be adjusted by the user at will
Cons:
user is susceptable to attacks from below
uses large amounts of chakra
enough force in any area can break it
can be broken by a massive scale attack
increases blindness in a non-EMS user
Susanoo is very powerful since it has offensive capabilities, protects the user from all sides and becomes more powerful with each added layer.
On the down side, it takes a heavy amount of chakra to use and can cause permanent blindness if used too much. It can also be broken with significant force and the user can be attacked from below or pulled out of the susanoo itself.
So its stationary, uses large amounts of chakra, and the power can be controlled like rotation, but has offensive capabilities and can be broken like the sand defense.
If we were to compare the most powerful versions of each defense in terms of strictly defensive capability, if would go like this:
1)Rotation
2)Susanoo(Itachi/Sasuke)
3)Gaaras Sand
Rotation overall is simply more powerful in many aspects than both the susanoo and the sand due to the type of defense it is and has fewer weaknesses to take it down.
If we were to go with offensive capability it would go like this:
1)Gaaras Sand
2)Susanoo(Itachi/Sasuke)
3)Rotation
Gaaras sand can be used freely since this type of defense is automatic and is not restricted to being stationary like the other two.
Susanoo would be the in-between with great offensive and defensive capabilties.
