Interesting Star Wars post

If you're a Star Wars geek like me, you might find this post interesting. I've been thinking about these two scenes, myself.

What I would is that in the original trilogy, Luke, Vader/Anakin, and the Emperor all have a scheme going. Vader wants to recruit Luke to overthrow the Emperor (because there can only be two Sith at any time). The Emperor wants to replace Vader with Luke. And Luke wants to turn Vader against the Emperor. So Luke is using Sithdom against the Sith?