I really don't know the difference between floss media and the paper media. I do know that when we cut them open they all looked the same...Paper. Now Fram had paper caps on the end of the filter media and the others had metal. Is this worse or better, I do not know. The Wix rep never claimed they were using a different media. As a matter of fact he told us it was the same exact type of media. That was 15 years ago and technology could have changed, I do not know. But in order, best I can remember, the most pleats to the fewest was 1. Wix 2. AC,Motocraft, Mopar, Purolator 3. Fram. I would have to cut filters again today to make that same claim. Things change as does technology. As to the oil pressure issue, I cannot fathom how more pleats of the same type of material would lower presure. All you are doing is increasing the surface area. Now a more dense paper that restricted flow, that would do it, but I never heard that claim made by the Wix rep. Not trying to argue just stating my experience. BTW, It did give me a lot more confidence in oem brand filters.