Those stats for Europe.
I think that rather than express the fatality rates as a % of average as they do on that site, a better way is to test statistically the statement:
"They are fundamentally the same", is it possible that the differences are caused by chance?
In this case, the chances of AF being just unlucky are about 4.5% , Turkish 3%, Aeroflot about 1 in 1500! So, yes a concern.
You cannot really say much about the rest, BA,LH, Alitalia & Iberia seem to have dodged about 5 between them, but even then there is a 1 in 3 or 4 chance that they just got lucky, and if you make your own luck, let us hope they continue to do so.
RyanAir & Easy - looking good but to quote the Chinese "too soon to tell".
Still, fatalities data is a bit of a blunt instrument, I would rather deal with how often the holes nearly lined up if I had to make a meaningful ranking.