Oh you mean like those guys camped 10 miles away with LMGs aimed down the sights tap/burst shooting which makes them superior to every other gun in every way? Clip size, accuracy, damage? All better. And of course they sit on medkits to keep themselves healed from minor injuries. Very realistic...
And your arguement is? And heavy metal is largest map, which is around 2km(?) uncap to uncap. And the bullet speed of a pistol 900m/s. Go figure.
It is realistic, bullet trajectory (which is affected by gravity) will follow the distance of any map until stopped by your head or otherwise, bullets do tend to fly for quite some time y'know. That's why you can get ridiculous pistol/LMG shots.
Or should we fake it and alter it completely so that bullets/explosives do nothing to everyone and have every one jumping around with rocket launchers ala quake?