I find this whole situation quite funny. You have to face the stark truth; public tf2 players do not like playing custom maps. They'll try them a lot of the time but the majority will play maps that were shipped with the game or have been included in updates. This lends to a lot of them perhaps not enjoying themselves in an unfamiliar environment. Whereas a lot of the people here take a more favourable approach to voting, giving maps generally > 6 round the board. This is probably because a lot of us have played the map from a1, seen it improve and know it, well for the maps made by people that regular tf2maps, the servers, chat and forums.. We have a kind of connection with the maps, and we take a more analytical approach, even if giving favourable votes. This connection is something that takes time to build, so you can't expect every random Joe to just come, play loads and loads of each map before voting. They'll vote based on their experiences, just like you will with yours. What's to say your vote is better thought out, a better representation of what the map is like or even more valid than somebody else's opinion?
If people are seriously going to bitch and moan about other people's public voting scores, either make it 100% Judges scores to deem the winner or do the public voting in private. PM it to the staff member running the contest so we get NONE of this bullshit that comes with public people voting. I'm sick to the back teeth of it and this isn't the first time something like this has happened. It's also one of the reasons I don't vote. I've never played a map enough to get a proper representation on how I feel about it. I think it was mangy or somebody who said something about testing a map for 40 hours total before you have tested a map enough to get the real representation of it. That's why I've never voted for a major contest thus far; and why I might never.
End Rant.