Call of Duty: World at War vs. Medal of Honor: Heroes 2 - Which is the Better FPS Experience?

Iran White writes:

When it comes to the First Person Shooter genre on the Nintendo Wii, gamers tend to be cautious. Largely due to the relative ripoffs that were Red Steel and Call of Duty 3. Many Wii owners who enjoy FPS's are waiting on High Voltage Software's The Conduit since it has become very clear that an unprecedented amount of effort from a 3rd party Developer is being made for the console. However, both EA's Medal of Honor: Heroes 2, and the recently released Call of Duty: World at War by Activision and Treyarch are decent games that are worth playing. Which one is the better experience? Let's compare the two.