I dabble in statistics a little....
Are the stories being embellished? No doubt some are, and some are also no doubt doing the rounds as hearsay and coming back much more dramatic than when originally told. Are the numbers just plain wrong and unrepresentative of Australia? There is probably a good argument to suggest that there is enough differences to question the generalisability of the data - such as the differences between LSA maintenance requirements and RA-Aus rego categories (and that is ignoring GA regoed aircraft).
There are a number of people here who I believe have shared very genuine stories of their own experiences with Jab engine failures. There are also a number of stories of incidents where occupants have walked away unharmed, supporting the stats above of low fatalities in Jabs (and the crashworthiness of the airframe design).
We face two intrinsic problems when it comes to accidents/incidents in Australia. Firstly, there seems to be little or no real data and reporting of incidents which would allow for real analysis of accident trends and correlates. Secondly, our flying population is so small that invariably you need many years of data to perform any real analysis, and that still may not offer an adequate sample size to look at accidents by specific make. So we have to rely on US data, and it is too big of a stretch to say that US data applies without a lot more proof. In another thread, I posted an analysis of fatality rates per 100K flying hours in Australia over a decade, and showed a statistically significant difference between GA and RA-Aus, with RA-Aus being twice the rate of GA. But with information so scant, the reasons why are just guesswork, not science.