I typed up a longer post yesterday and found that I had been logged out when I went to submit it, post was gone. Not sure why I have been getting booted off automatically lately...
Engine design must be a factor here...the Subaru 2.0l (FXT and WRX) and GM 1.5l (Malibu) DITs have been recalled for LSPI in the US and I am not sure about the Hyundai 1.6l (Veloster Turbo). The last engine had a real blowup problem when it was first introduced and the ECU was reprogrammed in later models, but I can't find any record of a recall. Ford has made lots of Ecoboost DITs and they do not seem to have a systemic LSPI problem, but there are some reports online of engine losses in LSPI-like circumstances...maybe Ford has the secret sauce?
As wemay has mentioned, calcium- and sodium-based detergents will tend to lead to more LSPI events while MoDTC and (particularly) ZDDP will tend to mitigate LSPI. It is certainly quite possible that a ~2500ppmish Ca oil that also has a higher level of ZDDP than a typical SN/GF5 product will not tend to trigger LSPI...the plot of LSPI events vs. ZDDP levels seemed to decline dramatically through the GF5 range and I used to add a touch of Rislone ZDDP additive to my oil in the pre-d1G2 days in an attempt to ride that slope down.
Driving style and auto transmission programming can also have a big effect, it is Low Speed PreIgnition and happens when the engine is heavily loaded at low RPM. My tranny is programmed to use boost before revs when I first get on it in auto mode, I think to increase fuel economy, so that tends to put me in the LSPI region unless I go "manual" through paddle shifting or use the downshift paddle to force an increase in revs in auto mode (I like the latter trick a lot). A driver in a high performance DIT with a stick is probably very likely to downshift aggressively when he really gets on it and very rarely be in the LSPI region of engine operation.
I had already learned about LSPI before my car was recalled for it and was using M1 5W30s that I knew had low calcium levels and no sodium, the issue was a bad combination of destructive and not well understood and I decided to play the percentages to try to avoid it while also using high quality oils with good reputations. I was pretty happy when my car was found to have no real damage in the recall, leakdown test results were great and my plugs were a bit dirty but the electrodes were all intact. May have had the same results on oils high in calcium and sodium, no way to know but, again, I like the idea of playing the percentages in my favor.
I think DIT owners should be aware of LSPI, once they know about it they can make their own decision about oil...heck, they can sell their car and walk to work because they're terrified of LSPI, I don't care. The information should be out there to be discussed openly, make of it what you will.