I strongly stand my ground on that point, mainly due to the writing styles that I've witnessed on this site and others. Anyone with abilities past those of human, can close the gap between them and a marksman quick enough that the usefulness of marksmen comes into question immediately. 

As well, unless they're getting shot in the head on the very first turn of the fight. Which would be a low down, scumbag thing to do. No Supherhuman melee fighter is going to instantly die from a bullet wound either. Hindered, maybe, but die? Hell to the no.

Hell, a human can take more than one bullet and keep kicking. Bullets aren't a guaranteed instant kill even in real life. Guns aren't these all powerful sticks of death that everyone makes them out to be.