Originally Posted by liondemon
Susanno is an Uchiha's spirit protecting them and fighting for them, which is why it hurt Sasuke to his cells, or something like that, he said.
The rest of this bullshit aside, lolwut? No it isn't. Susanoo is a chakra manifestation. It's not the Uchiha's spirit. It's only available to a select few Uchiha, as pointed out by Obito when he said "eyes that can summon Susanoo are rare even for MS".
As for your retarded excuse for Kakashi...He can us the sharingan just like the Uchiha. Itachi even said so when they fought. He just can't use it for extensive periods of time because his body isn't meant for it and it drains the shit out of his chakra. The only way he can use it for the duration of the war is he's had numerous breaks and chakra boosts.