As far as Muse songs go, Prophets of War is pretty alright. Muse have written better songs, but ultimately a mediocre Muse song still wins over the absolutely horrendous pile of hazardous waste that is the disgusting Megadeth track.
I actually have come to really enjoy Ghost of Freedom. Sure, it doesn't fit with the theme of Horror Show, but I still like it. Lickin' The Gun is really, really bad.
Machine Head is terrible nü metal. I don't get the hate for Machine Men, it's a decent song.
I don't like Queensryche, so that song just sounds like Queensryche to me. The Cream tune is very dumb.