Are we talking about 3rd Eye Madara? In this case he can't beat them.What about Madara & Kaguya? We know he's weaker than them, but think if he has these two eyes..
Yeah, I think that it is the best place he would be.More powerful than Madara, a little bit weaker than Kaguya
heck no madara absorbed juubi and juubi final form got 2 rinnegan and 3rd god eye no way and at that madara can solo sasuke with limbo.More powerful than Madara, a little bit weaker than Kaguya
Tenseigan grants power similar to RSM with TSB, that combined with Sasuke's rinnegan which is superior to Madara's, Sasuke indeed would be more powerful than Madaraheck no madara absorbed juubi and juubi final form got 2 rinnegan and 3rd god eye no way and at that madara can solo sasuke with limbo.