SoD Championship

And that's it? What exactly is wrong with the short map?

Let me start by saying what's good about the short map: it's fast, and many games end in the second week: players meet, discuss who has the better units, and say goodbye. However, it doesn't give a complete picture of skill due to the reasons mentioned above! On the HL map, there's more time and opportunities to correct a bad starting position from the map generator.
Therefore, skill matters more than luck (the initial map layout).

I'll probably add Anarchy to the list as well. But that's more because it's not as overplayed at the moment.

I just signed up for a tournament on it, on the portal, and we'll see if your words are true.