... Next time you need a favor from him, you can remind him of the greatness you have discovered in the Ka Bar. Just my perspective.
Oh man, that's funny.

I love social experiments.
Ask your friend what he's worried about, it sounds like he's afraid the knives are going to try to eat each other. Tell him not to worry, he just needs to keep them in separate drawers.
Even if you can prove that a Busse is superior in every aspect, you will never be able to convince
him. Now that he's taken a stance, he has risked losing face twice. The first was his expression that his brand is better, then after standing behind it, it turns more into a belief.
And we all know how beliefs go...
I watched a video the other day of a guy hammering an esee through one type of knife or another. When you bang sharpened pieces of steel together, its more of a "this one took
less damage than that one". You're not exactly going to cut through like Luke Skywalker with a lightsaber... not with the puny forces a human can produce. Think about hydraulic sheers, the steel is important, but its the thousands of pounds of pressure behind it that really matter.
Who's knife can cut through who's is kinda like asking who's car could drive through who's.
Edit: That knife test site is awesome, I'm glad its raining outside, I'll be there for a while...