There's no way Megadeth was worse than Iced Earth.
Heck, I'd say it was better than the Redemption album, which I basically agree with you about, although I haven't even been able to bring myself to listen to all the way through. I liked Gimme Your Soul... and Year Zero though. I don't really understand your problem with em. Also you basically nailed my feelings about Ghost Opera, which in my opinion was a MUCH bigger disappointment than United Abominations. I look forward to the rest of this list. I don't think I'll agree, but your opinions are pretty interesting.