Because you were claiming that to ride faster than an ebike on a normal bike was superhuman.
Sorry, there's a misunderstanding here, I wasn't claiming anything of the sort. Or not intentionally at least.
My point is that the arguments for increasing the available power and cutout speed on e-bikes because it's a practical
necessity are flawed. The vast majority of unassisted cyclists manage just fine with less than 250W to play with, and don't ride at 25kmh. No one
needs that extra power and speed. Plenty might
want it, and they should buy a moped.
So you'll run into trouble if you need to go up a 20% gradient. That's no big deal because the likelihood of a randomly chosen cyclist on a particular day encountering a hill like that is practically nil. And if you do happen across one, and can't manage then walk, the steepest parts are never very long. You'll soon be back on a manageable gradient.
The year before last I visited the Grand Colombier with some friends. They turned up in their camper with 250W assist e-bikes that they use to tootle around on. They both got up the Colombier (1,700m @8% with some savage steep bits) just fine, 250W assist was just dandy. I rode up at 188W average with no problem. No need for 500W motors or legs.