Its one of the easiest spots to look at the wear and properly estimate how many games have been played on the table. Figures on the audits menu can be easily deleted and you end up like a car with a rolled back odometer. If you are smart enough to cover the shooter lane in mylar when it comes out of the box and put protectors on it you can preserve the shooter lane to look like new while you own it, and it looks more attractive than a beat up lane when you sell it. some people care how nice it looks and some don't give a crap.
However...if you are looking at a game claimed to have only 200 huo plays on it and the shooter lane is trashed its pretty obvious that the seller is scamming you.