I think if you read more carefully there is no reference to being 100% accurate , only being consistently profitable or a given period of time.Quote from ematters:
I dont believe in ONE system that would be 100% accurate all the time. J
I'd say, having a system is good, but no one can pretend to have a fail-proof system.
My trading technique averages about 66% winners, and is consistently profitable on a weekly basis. I can't speak for ETRDR.
But I for one do know consistent profitability is a reality.
Good trading to all