There is nothing that can be balanced against God-King's Shrike or Dual-Magnus Prana. They are each the pinnacle of what can be accomplished with them. They are potent narrative powers, not mechanical crunch that might break the game if you buy the wrong Evocations. Again. None of these things are written with people like you in mind. Some people have fun with more vague narrative play that allows for individual nuance. You don't, that's fine. But that doesn't make the Charms invalid. Surprisingly, your feelings and preferences are not objective mathematical fact than can be equally applied to all games and circumstances.
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