I don't know…what is?
Honestly, how any one of you can accept this as even remotely logical is beyond me. Frankly, the scenario you describe sounds perfect to me. Why shouldn't this super-agent creep through the shadows and, on finding himself in possession of a shotgun, use it to decimate his foes? Sound tactics, from my perspective, yet in this world apparently his lack of "skill" means that weapon is best left as a paperweight.
That is a fairly horrid example, mate. What's more, the broken mechanics of one game need not reflect on another. I would also point out that implementing some of my ideas, as posted in my first reply, would negate such a thing.
For instance, what good would that Laser Rifle be, given your lax skill, if such a thing prohibited you from being able to repeatedly fire it without completely foregoing any sort of accuracy? If you were incapable of holding it securely enough to utilize such when running? If you could not reload it swiftly? If you lacked sufficient knowledge of its internal structure to service the weapon and, thus, maintain it in working order? If, when you chance upon some upgrade for such, you could not discern how it might be implemented? All these things would/are skill dependent, yet none are illogical.