I think that they are equalized.
Quantum is totally and purely INDESTRUCTIBLE.
Gem armor has some offensive powers, explode around you, sprint instead of walk, and super-jump, however, some things can and will deal you damage, and his powers have no effect agaisnt someone you can deal ZERO damage to.
I once tried Gem Armor agaisnt Quantum with a friend. I was gem armor. We destroyed the whole chunk, and none of the armors was even damaged.
However, in a nuclear meltdown...
Quantum survives.
Gem Armor is dead.