but it's still advantageous. you may not regard longer life, better fuel economy, lower wear as advantageous, but most people do.
sorry, that's incorrect. the adsorbed lubricant layer for a pao is more tenacious. that's one of the reasons it's a better lubricant.
wear product content of 2ppm vs 4ppm is small and "almost un-measurable", but it's 100% difference.