That site has been proved to be bullshit. It's your opinion, it's up to you to prove it, and you haven't yet. Get to work.
In your unvalidated opinion, or "feelings" if you will.
You show me a site that in any way supports K&N's claim to be a "superior" filter and you just might have some ground to stand on.
Until then, you are simply relying on your "feelings". Religion was made for people who follow feelings instead of fact and logic.
You can't argue against religion because the other party simply "believes". Go in peace believer.