What were the dyno numbers on the other two pulls for each configuration?
We're not naysaying, we're simply stating that a 2.6% (or even 3%) increase is below the threshold of signficance. There are too many other variables that need to be considered.
Perhaps if you controlled air temperature, standardized engine temperatures, ran multiple tests with multiple batches of oils (to account for any especially good for bad batches of oil--yes, even oil manufacturers can have variations in production), etc., and we still saw a consistent 3% improvement with RP, then the claim could be made more boldly. Even so, we're talking 3% here. I could see it being worth boasting over, say, 10%, but when one starts boasting over 2-3%, be prepared for skepticism.