Looks pretty tame to me.
I have never met a tough guy, I have only heard about them, during the first and second world wars.
If what they are asking is to be fearless, then I suppose I would fit the bill, I am not afraid of heights, have good upper body strength and would very easily do all the things they ask.
If you want to make sure you get a full bodied tuff guy, then face them with a challenge that could cost them a life, I doubt many would except that challenge.
My mate jumped out of an aircraft without a parachute for a bet, now thats tough. He relied on his best mate to jump out after him with a spare chute.
I know I trust my mates but enough to do that? I doubt it.
Everything for TV is about personalities and not about people who could or could not do the task, it would not be very good TV if the steriotypical geek was able to destroy the body building blue eyed ladies man.