I play it a lot, it is pretty solid, but running the Wii Remote is basically switching on easy mode. It has the same compensation as a normal controller, meaning you can literally shake the sight across the screen and every bullet will hit your target. Combine that with a gun like the SMR...
Another complaint is the target finder, basically an aimbot built into the game, campers love it.
I mainly stick to burst rifles and either a simple red dot or iron sights, that way I don't feel like the game is doing my job for me.
And I always run EMP Grenades, one grenade can clear every equipment placed by a room full of campers. I just wish they did more to target finders than just turn off the targeting, maybe make it static instead, that sight is just too overpowered. It also destroys a lot of killstreaks, like turrets and drones, even the AGR falls to 2.