Digital templating produces an accuracy that is just not achievable with wood or cardboard templates.
A scribed fit leaves no gap at the wall. A “straight cut” counter-top is faster and cheaper to produce but may result in excessive or uneven caulking or even worse. If your walls are not perfectly straight the installers may chop away drywall to slide the counter into the wall. They do this to hide the gap. You then get drafts especially on exterior walls as well as uneven overhangs.
Sub-standard stone shops still use hand shaping with grinders and hand routers which produce wavy, uneven edge profiles and radius by “eyeballing it”. Big and heavy 17,000 pound CNC Routers produce smooth, even and perfectly shaped radius with digital perfection. The difference is as dramatic as comparing a crackly old phonograph vs CD sound quality.
How the sink is mounted to the stone, how the stone is sealed, how the seams are prepared and made affect the finished product. A saw cut seam looks jagged and fat while a CNC prepared seam is tight and consistent. A company with a saw and a few hand tools will look like but not compare to a CNC shop. They are selling price not quality. Be careful!