I didn't like eagle one WAUD on my black car neither. It makes the paint look shiny but made my paint a little sterile looking. Now I only use it on cars that are metallics or light colors.
They certainly have similar results, but they seem different physically. The AutoGlym "AIO" is really thick and creamy. And the "SG" is really solventy smelling and super thin/watery. They also don't apply the same. The AutoGlym "SG" is very easy to remove after it sits, unlike the fussy SG.