My biggest problem flying in the left seat of a real C172 for the fist time after hundreds of hours on the M$ simulator was all the bad habits I picked up. Fixating on gauges being the worst. But also I realized I wasn't afraid of flying in the air but afraid of the ground and stalling six inches above. Not to mention the roll-out that follows. Understanding aircraft systems, navigation, communications can easily be learned through studying and time in the simulator. But at the end of the day, real stick and rudder skills are all that matters and can only really be understood and mastered through practice in type in the real thing. But, if the fit was to hit the san and both captain and first officer flat lined, I'm somewhat confident I could land a complex, heavy aircraft with help from the ground. After all, what choice would I have since the landing would be entered into my log book.