You are saying you think "more Z and Phosphorous" define a better oil? If that were true, all any oil manufacturer would have to do is add those elements and BOOM...they'd be great. Some people have the same opinion about "Moly". You are looking at individual trees and ignoring the forest.
Oil quality doesn't work that way...it's MUCH more complicated. Listen to the experts, they aren't trying to steer you wrong.