I say no, the confrontation still would have occurred. Vader, still would have brought Luke before the Emperor. The Emperor would still have tried to kill him and Vader still would have intervened. Vader may or may not have died, but the two together could have overpowered the emperor even without a giant pit.

4

Someone explain

1

alternate theory: the empire would have won if they had literally anyone but darth siDIHous as their leader

1