My experience is that the sim is much more forgiving than real life. The P-51 is not that easy, I have one. It does fly well but not so well as the sims version does. The larger the plane on the sim the slower and easier it handles. I think that is true to a point. My largest is a 90 and it is harder for me than the 40's. I think the Great Planes flight simulator is a masterful blend of physics and computer animation and great help but I would not rely on its physics to choose a plane.

It is also my experence that I had an easier time flying a low wing tail dragger than I ever did with my trainer. Felt a lot more comfortable to me to have greater control and response. I went from an Avistar to a Funtana. Can't suggest this but it worked for me despite everyone I know saying it was far to much for me then. Also bought a computer radio so I could control my rates at my pace along with some other nice things a computer radio will do.

Just my 2 cents
M