I've put like two games each on UM/HWN, undoubtedly there is more fun to be had with modes I didn't see, etc, but honestly I didn't really care for them at all - I didn't enjoy any of the shots. I'd take almost any recent Stern over them - Godzilla looks to be one of the better Sterns from the gameplay streams with very cool looking shots, though I haven't played it obviously.
No contest for me, long live Godzilla, King of Monsters.