“Who is stronger?” – Might versus Magic.

I am strongly against a pre-defined list; that's just nonsense from the start.
I suggest: each player has a pool of 8 factions at the beginning of the tournament (2 of each race, for 8 games). At the start of each game, the player chooses a faction from the remaining pool and informs the judge (it is then removed from the pool). This way: 1) players will have to think about which faction to use immediately (strong/weak races) and which to save for later. 2) knowing the opponent's pool, they can think about which faction to keep for themselves. I like this much more.