The concern is with abrasive wear of the fuel injector's moving components and damage to the injector valve seats by particles in the fuel (i.e., not plugging of the injector nozzle). Fuel injector nozzle orifice sizes are 50–100 microns.
Knecht/Mahle KL 145 is the Ducati OEM filter. Filtration efficiency: 10 micron particles.
So, the Ducati fuel filter removes particles twice as small as the NAPA 3032.
Also, a comparison of the size of the external casings indicates that the OEM filter contains more filter medium so it can also hold more contaminants before needing replacement (to avoid excessive fuel pump electrical power requirements). Consequently, the smaller filter catches fewer particles but may need to be changed more often than the Ducati maintenance schedule — makes price comparisons with the OEM filter uneven.
An Oetiker's clamp kit is a convenient thing to have.
Next filter change, I am changing to a Summit Racing billet unit with a 10 micron element. I use one on one of my track days cars. Very high flow. Then I don't have to mess with the hose clamps at all. For the purist, a few ounces of aluminum may be a turn off. Designed for AN fittings so takes a little lathe work to avoid adapters.