Right. The long range rifle isn't the best weapon in a high CZ (unless you're a demon at hitting moving targets).
I think... the best guns to have (and this needs a bit more experimentation to be sure) are those with headshot damage for quick takedowns. Of course, it's purely situational and very much depends on the layout of the zone you're in.
There's one type that's a military style base and checkpoint Charlie is always uncontested. It has a suit power charger pole right next to it and an ammo bos very close too. You can stand on the roof of the building and snipe like your name is Animal Mother.