Suppose Sasuke as a 10 tails Jin squared off against Madara as the 10 tails jin with both rinnegan, who do you think would prevail?
1st round: 17 year old Sasuke from end of the war arc eats a newely created chakra fruit from the infinite tsukyomi transforming into a similar form as Madara with the same chakra level as him
2nd round: adult Sasuke obtains the same form and Madara is ressurected somehow and re-collects the tailed beasts and becomes a Juubi Jin once again, still same chakra as each other just different ninja utilizing that power
1st round: 17 year old Sasuke from end of the war arc eats a newely created chakra fruit from the infinite tsukyomi transforming into a similar form as Madara with the same chakra level as him
2nd round: adult Sasuke obtains the same form and Madara is ressurected somehow and re-collects the tailed beasts and becomes a Juubi Jin once again, still same chakra as each other just different ninja utilizing that power