Compared to Kylo Ren’s outbursts Vader cracking glass of a Star Destroyer doesn’t really count as a tantrum. Also Vader wouldn’t just shrug off at the fact he has a son. That’s just not who he is.
Well, “tantrum” might have been a poor choice of words, but it is a bit too similar to the end of ROTS for my taste.
I see what you mean. At least there’s no cringe worthy “NOOOOOOOOOOO” in that comic.
One of he things that I liked with old EU stories is that they would acknowledge Vader’s feelings, but without having him smash stuff in the process (SOTE is a good example of this). He tended to keep it to himself.
I think it depends on the situation. Finding out that your Master lied to you about killing your pregnant wife and kids is something that warrants some anger. Visible anger. No one other than a droid would be able to hold that in.
But even that reaction is up for interpretation.
It was released pre ESB, was it not? If so then it shouldn’t be. At that time Vader was just a one dimensional (but great) baddie. He wasn’t like the Vader of ESB and ROTJ and Kylo Ren.