So I was rewatching RoTJ and I realized something. Sidious truly believed that they would survive the Rebel attack. Which brings me to my question. Would Luke Skywalker falling to the dark side have made a difference? It was pretty clear that Sidious was arrogant and that the Rebels were managing to hold their own in the fight. By the end of the battle Lando and Wedge were able to take out the power couplings (or whatever) on Death Star II. If Luke had indeed come to the dark side of the Force would Sidious have been able to turn his attention to the Rebel fleet and wtfpwn everyone? Or would he still have perished upon the Death Star? Personally I think the answer is "yes" and that the reason Luke was willing to throw away his lightsaber and die at Sidious hands initially was because he was fairly certain his friends would succeed. Thoughts?