Yes i watched the game and was interesting and i liked how each team read the other. For example left side went down to attacking at the bottom bridge and the right side immediately reacted on that. Maybetop side of the map was forgettable in this game .
Personally just for answering your question.

Each side had campy situation. Yes each side! This wasn't huge camps, always happened something there.
I don't think camp is fault of the maps.
The Final Frontier has the one of the openest figthing zone without lots of details(i mean on unwalkable tiles), just some larger hills are there.
As also happened already on New Horizon (50minutes camping to the first killed unit!!! oO) i don't think the camps are depending from the map. Yes depending(10%), but depending from the players(30%), from the PT army(20%) and the actual situations(40%) also.
Maps(10%)
I think to the maps can give chances for this kind of games. If a location is small then the campers has problem with units in the city. If a location is huge then the problem is the towers and between the soldiers.
And as i ve seen after the PT the game is like in the first round in the box. Just scouting and searching well placements for the units, and after the second round is the camping what can be longer and hold until the first shot.
Players(30%)
If a lobby has 8 pro players then they can make huge camps almost on every map! Still on the modified Cursed Ravine which has the Largest battle field! I think to groups of the
pro players know each other very well. They already know what the enemy will play, what kind of army will have etc... And maybe this one is the largest CAMPY FACTOR in the game. Not the unit balance, not the maps, not the communications. The knowledge of the other players. This community is a small group, yet. Almost all the time playing with the same players, i'm not wondering sometimes players afraid of the attacking the enemy.
Always need 1-2 players who has unknow style or unknow factor and that can make interesting game. Of course this is not guarantee the game withouth camps.
PT army(20%)
Evident if a player has less and not as good quality army than the enemy, then won't attack. Best if stay on his a__.
the actual situations(40%)
sharp eyes on the battle field. Sometimes just need a shot and after a huge infinity battle start and the camps over.
towers, unfinished cities...
Okay we are discussing about camping, but which map is campy clean? (yet?):)
;P