I love how the guy is swinging the Longsword as if it was a Katana, totally ignoring the fact that Longsword is infact, much longer and decide to still hit near the hilt with the quite possibly unsharpened edge of the sword.
The fact that his longsword stab bent like that also means that he has an absolute shitty form and it just so happens that the shorter Katana leaves more space for shitty form before it bends since it's much shorter.