Right, it's actualy very rare for there to be a model that is exactly 100% accurate to scale in outline and airfoil. Scaled down airfoils don't work very well, and many piloted aircraft have tails and other control surfaces that are small and can cause problems in a model. Now, flying a highly accurate scale model can be a real challange, and that's half the fun of that kind of flying.

And no scale model is going to have "scale weight" or scaled down wingloading. Those kinds of things don't scale right, and a 1/4 scale model that actually weighed 1/4 the full scale would never get off the ground. (and, you could argue, that since weight is a function of volume and density, and volume scales as the cube, that a 1/4 scale model should actually weigh 1/64 the full scale, but I digress. And the models don't do that either).

Also, it's very very rare for a scale RC model to have a the same power-to-weight of the piloted prototype. Most RC models have much more power than the origional, and without that excess power, most RC pilots would have a heck of a time flying the model at all.