It's inevitable that filters will last longer than oil just because you need to get rid of things that the filter cannot catch. Filters don't keep oil clean, they just slow the rate of spoilage.
Unless you are running HPL for 20k miles or such, it's highly unlikely that the filter you are throwing away is anywhere near its full capacity, especially if you are in an engine that's already clean.
The only reason I'm still changing filters with each drain is because I'm running VRP in a heavily varnished engine that is cleaning it quite a bit. SO the filter load is much higher than it would be in either a clean engine or one that isn't getting cleaner.