I love the way the same game can be seen differently!
I also thought the N Koreans were workmanlike and disciplined BUT I thought they looked like a team worthy of their world ranking. They had little or no creativity, I don't think there was a game plan beyond shutting out Brazil and even in that looked suspect. Their marking was pretty poor, particularly with picking up runners.
I certainly didn't think Brazil looked rattled, I'd have said it was more frustrated. It was only a matter of time before they scored imo. I thought Brazil eased off once they'd secured the points.
BUT, all of that said, I reckon North Korea have to be congratulated for effort; there was no lack of it. Perhaps it was a realistic approach but I couldn't help but wish for a little more enterprise from them.