Unprepped warriors entwined by ragers with deathblow, a/b/sed invokers walking straight through aforementioned ragers, a duergar a-p summoning every thief he meets into a locked room, rangers jumping a guy when he's in the middle of fighting a tough mob, only to be jumped in turn when said ranger is outside the wilderness... etc.
Nothing in here is "even," even though all are one on one.
I want fights. If I die, no big deal. If an asshole takes/sacs my crap, I'll asshole him back. Simple. Easy. Effective.
CF isn't about fair fights, its about making your fight as unfair as possible. Sometimes this takes ganging. I don't see this as any different from acquiring a/b/s or stacking yourself with dozens of speckled pills or acquiring ten pieces of incredibly awesome gear.