I feel the video just showed that they likely Would. The guy in the blue helmet near the end of the video apparently didn't even see the second attacker and gave him his backside. Easy takedown/knockout/death.
There is a lot of different stuff going on in the three videos, each of which can and should be critiqued differently.
In the purely Martial context which I feel
@wab25 was making, the post is accurate. Narrow in context maybe, but accurate. Forms and tippy/tappy sparring like shown in the video can be problematic when applied to self defense. Setting the right context in the gym/on the mat is vital.
I love forms and sparring but they have to be performed/practiced with the right mentality and understanding.