If it's true, imagine how the opponents feel. "Dude... we just got smacked by a guy with nun-chuks."
Now, this does broach an interesting subject. Whether or not that vid is real and as-presented, it sure looks as if it is. If it's fake, it's an awesome fake.
That's interesting, isn't it? The Bible's view of truth is a correspondence view; that is, statements in the Bible are true because they correspond to reality. They aren't true because they work, because they make us feel good, because they feel real. Some Biblical propositions don't "work" as we'd wish them to on our timeline; some make us feel really bad; and some call us to believe things that don't feel real in the least.
But we believe them and do them because they correspond to reality. God's word condemned me as a sinner, and I was, when I didn't feel my sin in the least. And God's word declares me as righteous as Jesus Christ Himself, with that alien, imputed righteousness, when I feel nothing but guilt and reproach and regret and shame. I should have believed the first before I did, I must believe the second even (and especially!) when it's hard, because they correspond to reality.
"Seeing is believing," folks have said for decades or longer. But with video editing as skilled and seamless as it is today, isn't that proposition pretty bankrupt? One has to have a grounded conviction that goes beyond even mere sensory experience.
Only Biblically-faithful Christians have that.