This is certainly true.
My only peeve with game objects, is that if they are presented as relics (IE. the original articles themselves, and not recent variants), then they should look as close to the original articles as possible.
(and these days, there is no real limitations on that.)
Well I think that New Vegas is doing a pretty good job on that, the Glock Plasma pistol and the Winchester Plasma rifle both look pretty spot on.
The only complaint is that the current version of the Sniper rifle looks like the F3 version, which I think is supposed to be a different (older?) model of the same DKS-501 gun, but it doesn't bother me that much. Maybe all the .308 versions of the DKS looked like that, who knows.
Though from what I can tell, the F3 version is very much like the F1/2 version of the gun, it just has a muzzle break, skeletonized stock, and a bipod.