Could you land a plane in an emergency?

You need to know the "speeds and feeds" of any given airplane. What is the stall speed? What is the landing speed? On a small single engine you can cut the throttle when you cross the fence but you'll hammer the landing gear on a commercial jet if you do that. How much flaps do you need? How do you enable thrust reversal? Does your plane have carb heat? Can you center the needles on the glide slope? Can you crab into a crosswind?

Commercial pilots are required to be trained for each type of jet they fly, even if they have years of experience.

After 2000 hours in the flight simulator I'm certain I could get a commercial jet on the ground but even the coroner wouldn't consider it a "landing".

From article:

"There is a simple way of... [accurately ascertaining] if a novice can indeed land an airliner, according to Patrick Smith: use a professional flight simulator, the kind airlines train their pilots with.

"Stick a person in a true, full-motion airline simulator at 35,000 feet, with no help, and watch what happens," he says. "It won't be pretty."