As I've never flown a Baron 58 in real life, I cannot compare it's Flight Dynamics by experience. As a Flight Simmer however, I believe the flight dynamics respond as one would expect a GA Aircraft like this to do so in a variety of scenario's. I referred back to the documentation and took a gander at the Performance Data. I took the Baron to the skies and tested stall speeds, cruise speeds and rate of height gain.
First I tested takeoff distances. While this cannot be accurately tested, I verified the accuracy of the data by taking the distance of the runway used, which was 7550ft. The documentation claims that with an outside temperature of 20*c and at sea level, takeoff distance is ~1400ft with a rotation at 85knots. So I applied full throttle with the suggested flap setting and paused the simulation at rotate. Moving to a “top-down” view revealed that approximately 80% of the runway was unused. This verifies that the aircraft's takeoff distance in simulation matches the performance data.
Next I tested stall speeds. I took the aircraft to 3000ft with a payload of 5500lb's, raised nose pitch, pulled back the throttle and watched the airspeed drop. At approximately 90kias the fpm gauge went negative and the nose dropped. Comparing this to the documentation's 91kcas, I consider the Flight Dynamics very accurate. Generally I found that this representation of the Baron 58 matched Real World Performance Data. Whether a real world Baron 58 pilot will find the Flight Dynamics accurate is another question, however.