I have never heard of such thorough research, but it seems to me that the majority of frequently run NA engines (the vast majority of which will be ones used by schools; private owners tend to fly a lot less) do make TBO.
It is the turbocharged ones that seem to be a total Russian roulette - looking at people I know.
And I don't see any obvious correlation between a lack of understanding of engine management on the part of the pilot, and getting cylinder cracks or turbo failures.
Also I see a much higher failure rate on 250HP turbo normalised engines than on identical NA 250HP engines (IO540-C4) so it isn't the HP alone... especially on an engine which exists in 350-380HP versions with almost no modifications. It has to be the much higher duty cycle spent at high stresses. A turbo engine tends to be flown at max cruise (say 75%) the whole time, and at high altitudes the air is a lot thinner.