Now you may be an acrobat like Dusty who crashed at 37mph and did not slide or you might be like most who come off slowly and slide a bit.
I don't get your obsession with 'sliding' - 99% of the time you will not slide on just one part of your body. Leaving aside the issue of crashing on motorcycles (which is hardly relevant), the only exceptions to this are probably crashing on mountain descents in the wet, where sliding seems to be the norm, for obvious reasons.
If any part of your body hits the deck at speed, it will heat up very quickly. If it is not covered, this will result in road rash. If it is covered, then the skin will be partly protected for as long as the material covering it can hold out. In lycra's case, this will not be long - so you will probably still get road rash (like the pic you posted earlier) but it will not be as bad as it would have been, had the area not been protected. We haven't even touched on the weight issue, which will also obviously influence friction and therefore injury level.
You keep using the word 'acrobatic' in relation to my crash - you weren't there, so I don't know why you think it was 'acrobatic' - I don't know if you've ever gone down in a bunch sprint, but it wasn't pleasant. It definitely wasn't acrobatic either.