I can agree with fist of havock being simplier of use, but I guess I just think in overall use of both of them, as in most the game you're more likely to be at a distance where golden gun is useable than fist of havock. Strikers inhabit the same issues you presented just usually the inverse instead. Unless its a surprise corner panic, most can see you coming a mile away and shotgun before you get the chance.
Of course they both have there strengths and weaknesses but I just am tired of the notion that FoH is these easy peasey super in all scenarios when GG and hell even the [i]projectile fist of havock[/i] the warlock possess are running amok