I've recently gone through this as a newbie and so can give you first hand experience at answering your question.

One thing you didn't mention is if you have an actual controller with the software. If you don't, the below doesn't apply.

If you do though, and you turn on the wind to 11mph or so and activate turbulence which I imagine your software can do (mine does but I have Real Flight G4), the sim is an excellent tool at teaching you how to fly - to a point.

If you spend the time on it, that's the most important thing, and you try to imagine that a crash is really a crash resulting in repairs, lost time and money, etc., and you duplicate real world conditions as much as possible such as wind and turbulence, I assure you it will surely teach you the stick movements in relation to what the airplane does. Also, if your sim has it, turn on Flight Failures, especially engine kills so you are forced to experience frequent unexpected deadstick landings.

A couple things that are different are depth perception and airplane tracking. In real life you have to turn you're head to watch the airplane. With the sim you don't. Also the ground doesn't disappear from view in real life as it does in the sim. Also, take-offs and landings are much easier on the sim than in real life. Last, and this is the biggest difference, is what I call the fear factor. On the sim you have no fear of crashing or having a mishap. In real life, when your new and have your first airplane in the sky, most people are nervous about something going wrong and/or making a mistake. This really affects your confidence, speed to react and most important your motor skills at controlling the sticks. I get fairly shakey in the hands and legs sometimes flying in real life and I've heard alot of others experience the same thing.

After saying all that, I wouldn't be surprised in the least that someone who spent enough time on a sim could learn to fly rc airplanes, minus the takeoffs and landings. Most won't though. They'll develop bad habits and have alot of fun crashing their airplanes on the sim. Pushing the reset button is too easy. There are exceptions but they're not the rule. I've seen young kids come to our training nights after spending alot of time on a sim and on their first flight they are doing loops, rolls, and in general flying fairly well. But more common is a person who spends alot of time on a sim and then tries their first flight in the real world and has a really difficult time. I wouldn't want EITHER type person taking off or especially landing. An instructor and a buddy box are higher on my list than a sim at learning how to fly, especially for take offs and landings.