Which plane are you tring in RF G2? The Spacewalker is pretty forgiving so start there and work your way up. It seems to me that the others are more touchy, need more speed, or need flaps to land well. FWIW, I also have found that landing a model tail dragger is easier than on the Sim, especially for wheel landings. My guess is that you don't get enough cisual cues for the fine depth perception on the sim...

Mark