Sage brother must be

[xXMadaraUchiaXx]

like this of them obito + kakashi + sakura + edo minato tobirama hashirama hiruzen
because
sage + brother >= kaguya
naruto +sasuke = sage
naruto + sasuke < kaguya but
naruto + sasuke + help of obito kakashi (sakura ) edo kages >= kaguya

so sagea brother is OP too

 

[Wparker6804]

Well, they will need help. And we WILL get info on the Sage's brother.
But corporial aid from him? I dunno.
Obito has both Kamui Sharingan now, and we have NO IDEA how powerful that is.
Who says that having all three Kamui jutsus is is the only perk you unlock with both Sharingan?
His eyes may have more to them if they are used sumultaniously.
I mean, who knows what is Susano'o would be capable of.

 

[Sound]

I hope Sasuke meets Sage brother so he can give him some power up to compete with Naruto