What's wrong with "Imagine?" Besides the fact that the original was supposed to be uplifting and hopeful, and the APC version was the opposite... But there's more than one way to look at a song's lyrics.
Despite the fact that Word Up is a bad song, there have been MUCH worse covers. Like the two Avril covers Alpha named. And presumably Linkin Park's cover of "Something I Can Never Have," which I don't even want to hear.