Come on all aircrafts go through a test at subsonic, sonic and supersonic speeds, you must know that mach number is not some fixed value, but changes for every fluid, in our case its air, and flying objects have very high pressure under their wings, you must be familiar with Magnus effect? The upper side of the wings generally have low pressure, and deltas have a very good shape to reduce induced drag, what does Jf 17 have?less area, more turbulence just at the tips and more induced drag?and about rolling and pitching, tejas was flying at supersonic speeds....and its no copy pasting, students dont need to copy past, tejas is unstable and its FBW is quite good at speeds greater than mach 1.2, and about load distribution, yes load distribution is a factor, since tejas was carrying just 2 missiles and not fuel tanks and bombs, its obvious that plane would not be going through load distribution problem as you stated, the wing loading was not at max, and to further clear your case, pilots launch missiles and bombs in a symmetry, that means they fire or release loads on both sides one after the other, inorder to maintain the balance....