The September Clue videos are much better, there are 10 parts, here's one.
and another
Look what the towers were made of, they did show the walls being constructed. They were built like sewer grates and even if the planes didn't shred they should have at least crumpled. The videos show no effect on the plane whatsoever. Those car crashes do show what an impact ought to look like. Need me to post ACTUAL plane crash videos too?