And also higher stress on the engine which in time leads to problems & failure. The higher the internal temp of an engine the greater the chance of failure in one way or another down the road. With a four engine jet, any ETOPS was not even a consideration. With a 4 engine jet you don't need to stay within a ETOPS range for diversion. Look at the reliability of the 747 from the 100's up to the -800..4 engines are by far safer then 2 engines. More systems & more redundant systems to improve safety of flight. If you loose a reverser on a twin you have no reverse available. You loose a reverser on a 4 engine jet, you still have 2 available either on a jet or a Turboprop. What's safer to drive, a motorcycle on 2 wheel's or a car/truck on 4 wheels for your personal safety?? Safety in numbers counts. Never heard of a RAT needed on a 747 did you?? Typically with a twin on an international flight, if you have to divert you have to put down in someplace like Cold Bay AK which is BFE. No services