You are right, I didn't expressed me well. I meant that for any successful deck, there is another that can win it, so there is an equilibrium that prevents having an absolute dominant archetype. On the other hand the point of equilibrium shifts depending on how people prepare their decks against others. If people want to punish blue decks, non-blue decks will improve. Same for other cases.
Oh for sure, there are moments that it's better. Possibly more often. Vampiric is one mana cheaper, allows you to get any card. However, transmute is blue (always a benefit in a FoW deck), can't be hit by mental misstep, and doesn't cost you life.
It's hard to say what I'd prefer to get. Both can be incredibably useful. Haha maybe I just overthink this.
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