That's a very flawed methodology - you NEVER add two different populations together unless you have a very solid theoretical belief that they are not intrinsically different. No researcher worth their salt would suggest that you could lump two different cultures, with different training, licencing, maintenance and regulatory standards together and say they are the same. Similar, but is similar good enough statistically? Analysis of the trends in US incidents is very useful, and there is much to learn. But generalising it to us and saying "because there is no problem with X over there, there must be no problem with X over here" is a weak argument. We can learn from their lessons, but need to start looking at our own more effectively.
You can't say that all the other US data applies, but the data on fatalities doesn't. Again, our data doesn't and shouldn't be trying to sway their data, as they shouldn't be put together. And is it enough to say that "our regs and maint schedules / requirements may produce reasons for slight variations"? In actual fact, that doesn't cut it in statistics and is a very unscientific way of trying to explain something. Without a systematic review of regs etc and proper analysis, they can't be discounted.
I don't have any evidence, but anecdotally that would seem to be the case in Australia too. Jab airframes seem to do very well from an occupant protection perspective.
Stats is a little more than a passing interest for me - I'm actually doing a PhD on psychometrics and statistical modelling in individual differences at the moment. I hope I don't come across as harsh or condescending, as it certainly isn't my intention. I deplore the state of incident reporting, data collection, and rigorous analysis (or lack thereof) in recreational aviation in Australia. Honestly, GA isn't much better, with some data being collected but only high school level analysis conducted. I can't remember the last time I read an article in one of the international aviation psych journals that actually had an Australian study, and given that you are twice as likely to die in an RA-Aus aircraft compared to a GA aircraft (based on 10 years of data, corrected for hours flown and comparable types/operations only), there are plenty of homegrown opportunities to improve the safety of our pastime sitting right under our noses. If only real data was collected......