Rinnegan Obito > SM Naruto, Current Sasuke has no counter for Kamui
That's all that matters.
If you're talking about SM naruto that fought pain, yeah, it's obvious. If you're talking about current naruto, you couldn't be more wrong. Hell, even BSM naruto, at full speed, could possibily react to kamui. As we've seen, it's possible for an SM user to sense the upcoming atack and dodge. Naruto's speed in BSM would be more than enough, and his SM danger sensing, fused with the kyuubi chakra sensing, would allow him to dodge, and perhaps even counter obito's atack in the right time.
Current naruto is way faster and stronger than BSM, and possibily with better sensing.
We don't even know what sasuke is capable of, but considering that his EMS was wnough to track juubito's movements, his current from should be able to sense the atack.
Incase you didn't notice Madara just regenerated from having half of his body blown up, and wasn't expecting Naruto to be buffed up.
He is still the juubi jin, and not expectin naruto to be more powerful wouldn't lower his durability. The yoton FRS damaged him considerabily, and that was used by "base" naruto.
That would've damaged obito even more. Now, let alone what naruto can do in his chakra mode with onmyyoudon.