Fuel filters

[Mrkentee]

ISX15-CM871
I usually get Fleetguard filters,
FF2203-primary/water separator
FF2200-secondary/pressure side

This last time I had them install FS1000 on the primary side. I thought being a bigger filter, it was better.
After checking, I find that the original FF2203 primary filter is 140 microns.
This FS1000 is 10 microns.
The secondary/pressure side filter is 15 microns.
So the primary went from 140 to 10 microns. The secondary is still 15 microns.

Is this good, bad, better, or worse??

No noticable difference in performance. And the FS1000 has a drain.