Thanks Auto Doc's,
"...slightly better filtering media..."
In general engine filters are judged on their ability to remove contaminants, down to a certain size (micron), while not unduly restricting flow (surface area)
For the most part filters remove solids ie products (metal) of friction. There may be a small ability to remove some byproduct of combustion (carbon) but this would be very limited, if at all.
All conventional filters impose a degree of resistance to flow. This means that the finer the filter media the more restriction there will be to flow. To much restriction and the fluid (oil) will not circulate effectively.
If you agree with the above, then the question is how does the Yellow filter extend oil change intervals AND why would B&S offer another, Orange, oil service life extending filter.
".....3 filters then actually cut them open...study the differences..."
I ask the Forum for this, as the collective wisdom/experince far out ways anything I have to offer.
I have seen no promotional/education material on why B&S offer no less than three diffrent (colour) oil filters for the same engine.