Doesn't look like T-Rex to me.
I agree. Head’s too small in proportion to the body [unless it’s the camera angle.
It does to me. It looks a bit out of proportion because of the longer backbone and legs in relation to the skull, but even then, compare that skull to other raptors. This thing had some serious jaw muscles to need a head that big, and the front limbs are seriously atrophied. Nice find.