Curious about this too. I've done five of the CPL exams so far and am not looking forward to doing it all again for ATPL! The Americans seem to have it laughably easy compared to us.
They've also got most of the question bank available ahead of time through companies like Sheppard, so most candidates recognise the vast majority of the questions going in, unlike here we're they're all novel.
I shouldn't really complain about being held to a higher standard, but it's hard not to be a little envious sometimes.