Obito doesn't have zetsu body parts...
I agree with this. Some people are downplaying Obito a little. He definitely will have to be more nimble, but he could hold his own against most shinobi. Given his Zetsu body parts, he wouldn't exhaust himself too much.
He has directly Hashirama's tissue like Madara did.
Zetsu are actually people from infinite tsukyomi, there is no senju DNA from those people.
On top of that...
If Obito was actually part zetsu, he would of turned into a tree from kcm naruto's rasengan like all the other white Zetsu's in the war.
Just wanted to clarify that misconception