As a pilot I know I can get it (large airliner) on the ground with a good chance of survival. The larger and more complex the aircraft the less likely a good outcome. That said, with assistance on the radio the chances move in your favor. Potentially, significantly so. Especially if intelligent and flight training is in your corner. The further removed from intelligent and pilot training the less likely a good outcome becomes. Though this also trends with the size and complexity of the aircraft.
That said, landing doesn't have to mean "safe" or that the aircraft is reusable after the landing. Getting the aircraft on the ground without an instant fireball is 90% of the battle. Getting it lined up with the runway and keeping it so is the primary determining factor for a good outcome.
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