Board Thread:Versus Debates/@comment-29769110-20170114130858/@comment-9782468-20170115152549

Obito's abilities with DMS aren't known the only time we've seen his Sharingan used together in actual combat are when Kakashi used them with Six Paths Power.

In any case, I think that with both his eye powers, he'd beat Itachi high difficulty. If Obito had one eye, it'd be more even and I'd be more inclined to believe Itachi would figure out and exploit his abilities/weaknesses.