Board Thread:Theories and Speculation/@comment-1872728-20160229033316

I have a couple of points:

Symbol:

Uchiha's symbol has the moon symbol in it, and Uzumaki's symbol has the sun symbol in it, but Senju's symbol doesn't have the sun symbol in it.

Hair: Moon Otsutsuki (White hair - Hamura) is main, and Hyuga (Black) is branch. So Uzumaki (Red hair - Hagoromo) is main, Senju (Black) is branch of the main, and Uchiha (Black) is branch.

Special Ability: Uchiha has the ability to create a chakra structure (Susanoo), Uzumaki has that ability too (Adamantine Chains), and they both have the powers on par with a Tailed Beast, yet Senju doesn't have this special ability. Wood Release is less of a Senju ability and more like a Shinju ability, plus it's only shown to be used by one person only, and a special one too (Reincarnation of Asura).

The reason why "Uchiha vs Senju" in the Warring States Period is because the Uzumaki is a defensive clan and is more skilled in fuinjutsu, whereas the Senju is an offensive clan and is more skilled in ninjutsu.  