I think you are right, you don't catch more fish because you bought a new pole, but when I bought my full frame camera the cropped sensors where really noisy in low light and software noise reduction blurred all the detail out of a photo. Today I would be perfectly happy with a crop sensor camera and wide angle lens. I even think my Sony point and shoot does a great job but then I am no longer a pixel peeperI wonder how many of us are truly limited by the camera's ability and specifications???
Gerhard