Well, that is kinda something I'd rather wait until Gem comes back.
Anyhow, the reason why it's different from a normal attack is because you use the stats of your attacker for both elements. So let's say we're fighting a pokemon with super high defense, like Steelix. So you need to attack with special attack stat. But your only pokemon with super effective moves for some reason has the wrong attack type to be effective (An attack type which Steelix is tough against). You're effectively transfering the attack type to a different pokemon who has the proper attack stat (Special attack) to use it more effectively.
Anyhow, not saying no to your suggestion, but waiting for Gem, since I thought it was decided quite a while ago. ^^:
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