[quote=@Andreyich]
https://youtu.be/EDkoj932YFo?t=391
longsword stabbing through plate, along with grorious nippon steel cutting power elsewhere in the video. Because videos mean everything right?[/quote]

You lost me instantaneously when you brought up a repeatedly debunked video with R. Lee Ermey. He didn't use a real breastplate OR a real sword, he used a wallhanger and a paper-thin piece of LARP costume. He shot through an identical plate with a HUNTING BOW in a different video, when actual historical plate has been shown to hold up to gunfire.

You're right, though. I was wrong comparing your information to Deadliest Warrior. That's a step above an R. Lee Ermey video where you can visibly see that they aren't using real weapon OR real armour. At least Deadliest Warrior TRIED.