Warsong Gulch CTF Map (Score 1)

I've noticed that the Warsong Gulch Capture the Flag Map is very similar to a map by Der Kommissar called Contested Territories (LMCTF22) from the Quake 2 LMCTF Mod. (basic ss only, couldnt find a tour of the map and don't have quake at work http://www.planetquake.com/lmctf/maps.html) This is especially noticeable from the inside the bases. Was this planned as a inspiration or does "the Der" work there?