Juubi has all the powerful genjustus?

[OfficialRikudouSennin]

If the juubi created the sharingan or helped shouldn't it have all the justus of the current users that obtained them?

 

[Twin Steps]

That's not how it works

 

[Horus]

Yeah.
I think so

 

[CurseSealofEarth]

I really don't think it works like that.

 

[AlphaScythian]

If the juubi created the sharingan or helped shouldn't it have all the justus of the current users that obtained them?

That depends on juubi's intelligence levels and ability to create and actually use that eye as ninjutsus.
But sure there is a possibility.

 

[avenged sevenfold]

it doesnt work that way