What is more dangerous skateboarding or bmx?

BMX IS FAR MORE DANGEROUS THAN Skateboarding

Most of the time you only have two limbs attached to the bike at one time. (i.e. barspins, tailwhips, superman, etc)So catching yourself is totally out of the question when you are going 20-25mph opposed to scooter speed. Also because you go so much faster you generally get a whole lot more air which in return makes crashing more devastating. Would you rather crash on the concrete going appx. 7mph at most; or crash at 25mph, not just on concrete but toppling over a metal bike with poking edges. Hence why you see so many more people skateboarding rather than riding BMX, and it isn't just because BMX takes a lot more strength.