I made a little statistic how well the top players did on the different maps. I considered every player who attended at least two of the big Q3 events in 2008: eswc ESWC Masters Paris, GameGune, eswc ESWC Finals or eswc ESWC Masters Athen.

Top 5 on each map (min. 4 games on the specific map):

"player name" "number of wins" / "number of matches"

ZTN is the only map which is not removed on a regular basis by all listed players.
Only a few players seem to feel comfortable on all maps.

There might be some errors, if you find one, please post it.