I see what the OP was saying, and yes it was a bad comparison.
But he's right in one thing... there is a LOT of ground to cover in mythical critters and unique-feeling champions could arrise from it.
Imagine playing a Cerebus-champion who spoke in 3 simultaneous voices at once before spitting fire at you or rushing in for the kill.
Imagine playing a Griffon-rider and swooping down on people with a lance as the griffon gives that awesome eagle-screech.
Maybe a champ could be a unicorn. Not a sissy peaceful one, but a huge, brown stallion who played like a tanky war-charger... rushing into the fray and impaling people.
We do have some cool fantasy champs so far, but you can't tell me that that Cerberus idea wouldn't be awesome to see. It'd certainly be more interesting to look at than more humans trudging around with... I dunno... fire boots. It's less about avoiding tech and more about making champs who look very distinct. unique and interesting.