Baldwin/Hastings doesn't give oil filter performance information AFAIK. (I've never found it or seen it posted.) I think they just use plain old cellulose paper filter media, just adequate. Oil filters for trucks there might be different, just talking car stuff here.
Wix and the same NAPA Gold oil filters publish 95% @ 20 microns, not as good as Fram ToughGuard or Fram Ultra at 99% @ 20 micons, yet the Wix/Golds are good.
Also try to use an oil filter with a silicon ADBV, not nitrile or butyl.