Let’s not forget one important ingredient: Human Factors.
Doesn’t matter how well you do in training the first time somebody shoots at you in anger changes your perspectives.
Same with the first time your only engine sounds like it’s hacking up a lung.
People deal in different ways when their life is literally dependent on what they do for the next couple minutes.
Some freeze, some stay cool till they get home then fall apart and some just try and stumble their way through it the best they can.
Training is always different from that very first time dealing with the real thing.
Lets face it, most GA proficiency checks are done cookie cutter style, designated practice areas and they do their best to distract you from seeing that really big field under the right wing when they pull the power.
Go around at 500’ because of low flying restrictions and noise and off to the clubhouse they go.
So it’s fairly arrogant to state how good you are in a training environment if you don’t know how difficult the real thing is.
Its like being a black belt in no contact Karate.