After playing Ghost Squad for a while, with responsive spot-on aiming, I fired up MOHH2 to try it out. The movement control was wonky, and I kept finding myself disoriented and unable to straighten out my view. (Am using zapper controls, which are set up just fine.) Aiming and moving would be OK, and then get out of whack and I kept getting messed up. Reloading often caused me to lose my bearings. I'm about 10' back from my 65" tv.
So, how did I fix it? (After a frustrating 2 campaign missions.) I checked the wii sensor bar sensitivity. Turns out there were 2 dots above the sensor bar dots,coming from 2 wall sconces above/behind the tv, which are usually on dim. They gave full spots with sensitivity on 4. I turned it down to 2, and the sconce dots disappeared. Control is now smooth and consistent. *Much* better. MOHH2 seems to be more sensitive to the sensor bar interference than other games, maybe because of the combined aiming/movement pointing control.
MORAL: If your MOHH2 controls are a bit flaky, check your sensor bar sensitivity in the wii settings menu. Make sure there are only 2 dots there!!