Yes we know they only tried 4 synthetic filters, and one of those m1 was a blend. But, since the three 100% synthetic filters finished 1,2,3 and the blend finished 4 ahead of all papers, I feel pretty comfortable thinking all synthetic media filters are going to outperform paper from cradle to grave of that filter, and I would wager are pretty close to each other as well. To complicate things even further, if they tested the puro sun filter it would mean zero since they redesigned it, and even out RP filters have gone through several iterations of the tested filter, and needless to say fram would likely no longer be a top choice, especially considering it was the number 1 pick of the tester.
It is literally impossible to stay current in this environment. You just have to make your decisions based on experiences plus a little thought to the construction. The main value is how much better synthetic media is from paper even fresh, which at the time was brand new information. Paper continues to degrade and synthetic fibers seam to get better with time. The good news here is we don't spin or sugar coat it based on feelings, we go off facts and experience that includes all of the tools we can find even cutting open dirty filters and sharing the info. This test was only fresh filters, our tests hint at end of interval performance. The two paper filters I remember cutting open where stiff as a board, every synthetic fiber I cut open as fresh as the day it was born.