Originally posted by SS_181st_Snow
He let mace win, he didn't expect Vader to do that, and it's one more sith than you've ever taught.
The "he let Mace win" hackneyed BS has been done to death. The onscreen evidence has not supported it and GL has not cleared the ambiguity, therefore it stands.
So? He's going to "expect" someone to backstab him then? Have you ever thought he won't be a good leader because he didn't see it coming? It's not like the Sith announce they're going to backstab days ahead of time. They don't forward their declarations of treason.
Okay, and it's one more Sith than you have too, what's the point?
Stop being a fanboy and realize Sidious wouldn't be a good leader of an army of Sith.