I think so. Personally, I think the participants should all put the teams in order (excluding our own) and also post it as a poll and have a point system already established.
An example of the point system could be: every first place vote a team gets with participants they get 11pts, 2nd gets 10, 3rd gets 9 and so on.
Essentially, with us having 12 teams, the most a team could walk away with for our voting would be 121. (11x11) as a team cannot vote for itself.
Then when it comes to the polling of the other DC world, I would say we could give like 242 for first place, 220 for 2nd, 198 for 3rd etc.
This would give the DC forum a 2/3 vote, which I think with the amount of votes it would have is fair. Then you just take the pts from both and add them together. Whoever has the most pts wins, 2nd most pts get 2nd etc