They have smaller maps like Strikezone and WarHawk.. takes no time to find players on those maps. They may even have smaller maps in the DLC, who knows?
But You can make the game play how you want... stop trying to get them to tweak it only for your playstyle.
Quickscoping isn't effortless. It takes a butt load of time invested to get good enough at it to dominate anything with a sniper rifle. If you want to see 'effortless', watch an experienced YouTuber use a silenced Remington R5/SC2010/K12 on Strikezone and you will see 'overpowered' in action.