Triples are statistically much less likely to present critical engine out situations. Almost always there is time to get it down before a second engine goes down. Also the center engine presents air directly to the tail surfaces necessary for control.

You cannot learn to successfully fly emergency’s after the emergency happens. Practice during non-emergency time is mandatory. Any of the newer radios have the capability of simulating engines out. It is not all that hard to learn to fly with an engine out provided there is a way to practice without destroying the airframe. Engine out flying is distinctly different but not all that hard if practiced.

For me triples make a better training ground. After you become proficient the center engine does not need to be started,

Bill