And also, the shootout was seen from many different perspectives so the shootout itself didn't last as long as it did in the episode. It probably lasted 10 - 15 seconds.
Fair points, didn't really think about all that. It just seemed a bit silly when i watched it outright.
Also, to add to what someone said earlier, I am still really routing for Walt, even though he's a completed scum now. I've invested too much into his story, he can't just get taken down then the end. I would be very annoyed by that