Well AMF, I'm a Brit PPL and I have driven a PA28 through class C in the LAX basin and had the crew of a 727 get very concerned because they couldn't see me against the ground clutter, even with all the nav, strobe and landing lights turned on.
The separation was 500 ft vertical and I had every sympathy for the 727 crew, since I certainly could see them.
So I think that you should be a little fairer in your comments.
BTW, I am not implying that the US system is unsafe, but it seems to me that many heavy drivers are concerned with seeing and avoiding light aircraft ... perhaps the C172/PSA incident at San Diego is still fresh in many memories.