Basic physics says that the less absorbency there is between the rims and the kerbs, the higher the chances of damage, but as you say, the suspension will make a difference too. I think it's just common sense that if you fit low-profile tyres, you're going to feel and hear the road more, and you're going to increase the chances of kerb damage. I've previously always had LP tyres on my cars, but this time I went for 18" summer and 17" winters, and I have definitely ridden kerbs so far that would have damaged my previous cars' rims.