Vladius said:

That's the problem, you're oversimplifying a situation that was never simple. It's partially the Emperor/Darth Vader's influence in the Force, y'know, like Yoda and Obi Wan told Luke many times over the course of both ESB and ROTJ, and partially Luke's other motivations, which the Emperor exploits.

I'm saying that there should be more established and better developed motivations for Luke's near turn.....and you're saying that it's the emperor's power of persuasion in the force that defies rational.

How am I the one oversimplifying this?

Vladius said:

The point of the tension is not "oh no, Luke is going to turn to the dark side," which might be your problem.

What? How is that not the case? Sure, there's tons of things going on but that's absolutely a part of the conflict.