This is one of the funnier threads, for all the wrong reasons, I've read in a while.
FWIW, mounting most skis boot line to factory line results in being 1.5-4 cm behind (-) where you'd be if you mounted BOF mark on boot to center of running surface of ski. French skis tend to have less difference between the two approaches, German/Austrian skis, more. Don't know about K2. Realskiers has a good article on this, and we've run about a zillion threads on it.
So if you mount "line to line," you're usually in what some people consider a Freerider position, better for stability and tail management, and if you mount ahead (+) of the lines, you're usually just moving into a BOF position, which is going to yield quicker turns at some expense of stability. Which you choose depends on your style and terrain; there is no "Correct" position. Or you can run Railflex's and can adjust as you go.
At the end of the day, it pays to measure your skis, locate your BOF on your boot, and compare the two ways of doing it. So you can make an informed decision, sans name-calling...