Thats the point guys. Vader doesnt look here and there. His moves are minimal and heavy/slow. Thats why i dont like how he puts his hands in his waist like an offended bitch when he first meets leia( i think its an easy fix)

Or when he replies "what do you mean" to tarkin. He moves so fast his head. Generally in ANH he is in the background. Vader also doenst ask these things...

There is no "as you wish" lines to officers like Tarkin. I still prefer TMBTM version,if not perfect, "adress me as lord Vader"

There is a mention that the dude in Tantive is the only person that responds back to vader and he didnt die.

One look from vader means that you have 50/50 chance to die or live.

-Angel