Ryujin
Legend
Standing up in armor while a guy tries to kill you is hard.
Standing up naked while a guy tries to kill you is hard.
It's not the armor that makes it hard. If you don't understand how that was dishonest, I can't help you.
What experience do you have to say that it wasn't?
Apparently I don't then. Let's try this angle; which of the two is HARDER, and by what order of magnitude?
You're the expert in period armor, you tell us. I only know what I've read and witnessed, I don't have an intimate understanding of early plate armors.
I'm hardly an expert. I've done my reading, seen the SCA folks whack each other about the head and shoulders, examined historic pieces in museums, etc.. My original comment of 70 lbs. weight should likely be more in the 70Kg range for an appropriate suit.
The suit in that video would appear to be modeled on 15th century plate and likely made from modern materials, rather than low carbon steel. That's mostly guesswork, as a grainy video provides little evidence. I'm pretty certain on the period though. If modeled on earlier armour then it wouldn't have had what appeared to be cloth in critical areas, but rather chainmail inserts to protect critical areas such as the groin and joints.
If you want something to use by way of comparison, then Hollywood has shown the approximate difference. Give "A Knight's Tale" a watch. The armour that the hero gets from the female smith is similar to 15th century type, while that used by the other jousters is more like what I'm talking about. The difference spans perhaps 150+ years in armour development. Obviously it isn't a historically accurate depiction (what in Hollywood is?) and the armour that he uses is actually more meant for combat afoot rather than mounted, but it demonstrates the differences fairly effectively.