Oh, somebody brought up a great point in that thread. Obito's right eye Kamui is restricted to close range, so all Satoru has to do is keep his distance and attack with long-ranged abilities, which he has plenty of and has been shown to do on a regular basis. If Satoru were to get up close and personal with Obito, and he attempted to BFR him, then Satoru could simply teleport away or create a space to block up the dimensional rift? Really, unless I am missing something, the only way Obito wins with Kamui is if he gets close enough to use it on Satoru, which he likely won't, and if Satoru were to be caught like a dumbass and lost the ability to escape, which he won't.