I love Oliver Stone but the critiques that he makes are basically being made out of context when you consider that he hasn't "watch[ed] the series very much". It's not luck that Walt parks the car where he does, he has been there before (when he hired Jack and company to kill Jesse is in episode 13[?]) so he knows the basic layout of the building and he's frequently pulled off those kind of MacGyver-esque tricks before. If he put those things into the mix, I think he might have a different view of the scene.
As for the violence, I guess it depends on the viewer but I don't think the violence is shown to be without consequence. One guy out of about ten walks away from the scene and the rest are all wiped out. I guess it's fair to say that it's something of a revenge fantasy rather than being wholly realistic but since it's the climax of the episode, season & series and Walt is killing the Nazis that murdered Hank, I think it's fair to give the audience a moment where they can root for Walt again and see Nazi scum get shot up.
Edited by TravisR, October 09 2013 - 11:57 AM.