I get why folks feel that way, but given the way a Chemist thinks, there is more Nandrolone in NPP than Deca, at least given the numbers and links that I posted.
I dont know that anyone makes the same claim with Test esters....meaning that you need a higher load of a shorter ester(like Prop) to give the same effect as a lower load of a longer ester(Like Cyp).
I think that the reasoning behind that thinking is that DECA builds heavily in the system, the longer the cycle goes, so you get a progressively higher serum build, and hence "more/better" results at the end.
I will say that even if you factor the difference in actual compound weight, DECA in week 14 will have a larger impact on the system than NPP will in the same week.
Like Torque(getting a car off the line) and horsepower(push at the end)