So at absolute best, the bare-knuckler equals out with the maniac, because there's the existence of this fear of the armed defender potentially shooting an innocent?
I take still take the armed defender, collateral and all, because there's the chance (which is not as infinitesimal as you and others have tried to construe it) that he takes out the shooter and protects many, if not all of the victims. Again, considering all the circumstances which would legally allow a concealed weapon into a movie theater (excepting an outlaw felon, which is outside of my control) we're looking at the armed defender having a much higher degree of skill with his firearm.