You already gave yourself the answer: in your posted table the manual says:
Well, it's says that Box>Box used only for Model>Sprite collusions, or am I wrong?
BTW, your code doesn't show, that c_rotate uses box shape. Rotate entity with it, and set GLIDE flag on, you'll see.
And there is no way, for c_trace to have ellipsoid shape, but box for c_move and c_rotate, as they made of c_traces:
Both c_move and c_rotate internally make use of c_trace by automatically setting USE_BOX and providing additional functionality such as gliding. If USE_BOX is not set, the c_trace collision will always use a ray. If the USE_BOX mode is set, c_trace tests an ellipsoid shape against polygonal targets. The collision shape used by c_move or c_rotate is either an oriented ellipsoid or an oriented box. Which one of these two is used depends on whether the collision is with a polygonal or a nonpolygonal target.
Greets
