JD Power is junk science. It is the perception of the problem by the owners. It relies on the owners reporting back.
Half of the owners of Tundra still think the truck is better than others, although they're on second engine replacement.
Surveying the original owner of a 3 year old vehicle about the problems they've experienced with their vehicle over the most recent 12 months is junk science?
I guess all VW owners are just really, really nit-picky. And all Toyota/Lexus owners are just conspiring together to not report any problems. What's truly amazing though is that this psychological phenomenon holds consistently year after year. You may be on to something here.