I'd say its the other way around, that most do not support it through lack of understanding what proper hardness is.
The HB stands up to a Lion then its called hard. A human stands up to a Lion its called stupid.
The GWS ISN'T much without its teeth is it?
A snake without venom just gives a nasty nip, bit of germolene and I'd just carry on.
Pretty much all the animals in this contest are not hard, they just hunt for food using "gods" gifts of weaponry they're given.
Humans we not given killer teeth...
The human has used what mother nature gave it, a larger brain and fingers and thumbs. That's how it creates a cage. The Shark uses what mother nature gave it, large razor teeth, powerful jaw, and some camouflage with its two tone body.
It's seems a human is stupid for getting in with the Shark...
I'm going to go big on the human this year, if allowed to use everything at its disposal that mother nature gave it then it would definitely be the hardest.