Yeah the thing with some modern fantasy is, the magic folk do insane powerful nonsense, but the weapon users become so good they can dodge spells that aren’t supposed to dodgeable, and break spells with a powerful or well placed strike, move so fast it might as well be a teleport.
It’s got to be able to cut through stone, shake the ground, hit in an arc with a single attack, dance around a large group and half of them just fall over (just an AoE effect that deals big damage and save vs death under XYZ CR?), deflect magic with weapons, and other wild stuff