I'm not sure whether the clearcoat is different. I know that LBB and fomula red have a tint, but again, not sure if that makes any difference to the integrity of the laquer. Probably not.
I would imagine that it is as you point out Mark. The colour which changes our perception of scratch resistance.
I've just bought the machine polish system that many of the bodyshops use, so will be interested to see how it works out and how long it is before the scratches begin to reappear.
Your point about washing is totally valid. Many car enthusiasts just drag the dirty sponge over the car then slap on some resin polish and the car looks passable. But never great.
Certainly some TFR, a wash Mit, a large bucket and a power washer will reduce wash related damage.

Cheers,

James.

Cheers,

James.