I don't think there's enough datapoint to draw a conclusion.

That being aside, the benefit of using different brand of oil *pales*
compared to simply adding 30% to your flying frequency. Just fly 30%
more often. You don't even need to fly 30% more hours. Just go out
one *extra* day every week (or two weeks) and fly for half an hour on
top of your existing flying schedule. You'll do better to the engine
than any fancy oil can possibly achieve.

I for one, use the cheap Phillips X/C 20W50, change every 25 hours, and
fly at least twice a week.