Spy Hunter is the inferior game.
Just too damn easy, especially for a Bally SS.
The in and back out saucer kills the game: Needed to be an orbit or a kick up north saucer.

At the very least Raven is more challenging due the in your face straight across stationary targets.
Also has more shots, more narrow shots, a better bonus buildup, 4 pop bumpers that do kick the ball around pretty good, and a part time orbit/lift to ramp left side shot.

Neither game is any sort of keeper.