But Samehada is more versitile, absorbing chakra and what not.
totsuka anyone thinking otherwise would be fodder if they had a choice of picking one and fighting the others
Totsuka? You would need Susano'o, and not alot of people have that. You need to pierce a target to seal them, but most swords do not seal their target.
I'm not sure you need susanoo for Totsuka Oro was searching for it remember, by him searching implies it could be used corporeally. Just a thought I coulf be wrong but I'm almost certain that's why you don't need susanoo to use it.

Oro wants it for research to make a new Totsuka for himself. Totsuka + Kusanagi.