Your logic is not 100% on solid ground. It all kinda depends.
In my tests, my filter is better. In your tests, your filter is better.
There's usually an ISO or ASTM or SAE standard that provides the testing criteria. But each may give different results. So it just comes down to agreeing to a standard. If two filter companie won't agree to same standard then there is no meaningful way to compare.
Lets say filter-A does SAE-1234 and ISO-5678, and filter-B does only SAE-1234, B may claim it did better in some of the SAE testing, while A claims it has great results from the ISO where B has none. Is A better than B?
What if it's just the SAE-1234, some tests for A are better, but not all tests. Do you just tally up the tests, do you weight each test with a factor and then tally the score?
What if an engine is more sensitive to bypass than another?
It's highly arbitrary in some regards, and perhaps meaningless in other regards.