mmmBono,
I am willing to bet that there were several dozen people out of the 273 that would have a top 50 album list similar to yours. The thing is that there were 200 other lists that may have been very different. They all get averaged together and this is what happens.
I am willing to bet that all 273 people who participated in the voting are just as surprised as many of us our by what did or did not make the list and where certain albums placed on the list. When you take the simple average of 273 peoples top 50 lists, its probably not going to make much sense to anyone.
I have an idea, lets do our own list here at intereference. To make it simple and get more people to participate, lets make it your top 10 albums instead of your top 50. If we can get 30 or more people to vote, I think that would be a good representive sample.
One problem of course will be a built in bias towards U2, so we might want to consider doing a top 10 list that does not include U2.