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The issue isn't the asymmetry of the decks - that happens everywhere except mirror matches under WT. On Balance-Panic, the gameplay is at least no worse.
Taking Fortress against double-Strong is a questionable decision; even without statistics, it should have been clear that a slow castle, geared towards Dragon Fly Hives and Dragon Utopias, is not very strong on a tempo template without them. Well, the statistics also highlight this - 2 wins in 9 games.