In the games that I have played (SS,B2,W2) have had Gym's well suited for the Fire type starters. Could you evaluate this and see if I'm not going crazy?
HG/SS: Only 4/16 GL are weak to Fire types.
B/W 2: 1/8 GL are weak to Fire.
I don't know what you see but nothing there states that Fire dominates. Esp. in B/W 2 who have Skyla, Drayden, Clay, and Marlon. In HG/SS they have Clair, Brock, Misty, and Blaine.