Carthage said:

Insane how weak they made him in canon, the idea of Vader not snapping Kanan's neck immediately just seems ill-fitting.

Ignoring the counterpoint already presented (which equally makes sense), I kind of like this. One of my problems with the prequels was how overpowered the characters seemed. It wasn't just how flashy the fights were - it was the sheer amount of power. I like a Vader who's not, in fact, THE MOST POWERFUL JEDI EVER. I prefer one who's just normally good at what he does. Remember, Vader appeared in Splinter of the Mind's Eye and Luke & Leia were able to escape with help... not to mention Han Solo took him by surprise in Episode 4.

Probably should've gone in "random star wars thoughts", but whatever. it's almost 1 am.