Cool pics. In regards to flying rc aircraft, there are a few things which make it easier. The first is that they use thumb sticks. The human thumb is far more accurate than the wrist and arm. A full sized desktop joystick is actually far less precise for that reason. Second is basically every controller made in the last 20 years has a 2 position switch for high/low control sensitivity. How sensitive each setting for each axis is is fully adjustable.
Lastly, real aircraft, including small models, are subject to flex. Jerking a stick doesn't do in real life what it does in dcs because in real life the control linkage will stretch/compress/bend some, as will the control surfaces, wings and other parts. This creates a very real muffling effect. DCS and other flight sims tend to use "perfect" systems devoid of mechanical slop and normal material properties. A good example is the FW-190 on the ground with a locked tail wheel. It goes so straight in DCS that it actually violates the most basic laws of physics. There is no slop in it in DCS. In the real world, the force required to make that happen is literally infinite. No finite force will allow that. That's just one simple example, but every part of flight in DCS has the same issue, as does every other flight sim ever made.;)