Board Thread:Versus Debates/@comment-43599250-20200714223844/@comment-2245550-20200715193203

He's still limited to using the Mangekyo Sharingan thrice a day before he feels a significant toll, so while he's very skilled and amazingly intelligent, Tobi might be able to match him, given that not only he's skilled and intelligent (not necessarily at Itachi's levels), but also he has the Kamui, which renders him virtually untouchable. If you're not Kakashi or haven't prepared like Konan did or have the Flying Raijin, I don't think you can counter Kamui. So as much as I hate to admit it, Itachi loses this, but mostly because of his limited Chakra reserves and failing health.