An interesting thought for you guys. Indeed, some maps are better than others-- and by better I mean more competitive. What makes a map competitive is how dynamic, skill-based, hard to cheese, and balanced it is. Isle of war, for example, has none of these qualities, whereas snow valley has all of them.
In 2v2 this is much more apparent due to the additional players on the map. Naturally, majority of the maps are not so good for competitive play. The following is a tier list of what I consider the playable 2v2 maps. Each will be assigned what I am now calling a "piner- power-rating", which is an arbitrary bs # given simply to point out how I perceive the severity in the difference of competitiveness between the maps. Worth noting that majority of maps would get darn close to 0.
Tier1: Ace maps PPR
1. Heck freezes over corners 13.89
2. Jungle of Vietnam 12.43
Hands down the best maps in the game. If u want to test who is better and you want the best quality games, these are the maps to play.
Tier2: Competitive substitutes
3. Desert Island 10.57
4. Coldest Peak 9.77
5. Divide and Conquer 9.50
Although there is nothing like heck or jungle, ya gotta change it up sometimes. These are the go-to's. Desert the clear #3.
Tier3: The Change-ups
6. Caverns of Siberia 9.00
7. Snow on Fire 8.75
8. Snow valley 8.29
9. Tour of Egypt 8.24
Still legit games on these maps, but the quality begins to dwindle at this tier.
Tier4: For LoLz, but still competitive
10. Alaskan Outback 8.03
11. Bull Run 7.61
12. Klondike Gold 6.44
Tier5: worthy once in a blue moon
13. Montana DMZ 6.13
14. The green Mile 5.46
15. South Pacific 4.88
16. Hammer and sickle 4.82