Please present the REAL data that supports your ’real world’ experience? Synthetics are miles above regular oils in longevity, increased lubricity (can you say less wear), and stability. I’m guessing you have never seen inside an engine that has run synthetics versus one that runs regular oil - BIG difference even with short change intervals.
BTW, motors may run cooler on higher octane buy they do NOT necessarily have more power - 2 much octane can actually decrease power. If there is not enough compression and spark to burn the higher octane fuel completely, it does not get the power out of the fuel. Look forward to those reports...