I want Kristen Lentz "Elementalist Superior" to be "Obviously able to beat Superman in a fight at full power". At full power, she has total control over the "four elements" plus Gravity, dimensional travel, and dimensional swords.
I want Rayne, the shadow girl, to be twice peak human in physical attributes, but she has shadow-merge and teleportation on top of that.
So which character type is more interesting? The one who is barely super-human, or the one who is absurdly super-human?