@Albino π answer this seriously
Can Law beat King?
Can Law beat King?
Laws Ope Ope attacks bisects Kings durability if his haki is strong enough, Law wouldn't need AdCoC to get past Kings lunarian defense he would only need to get past his haki. Also Law has attacks that ruins opponents from within, don't think King has an answer to that.
If you go by overall fighting capabilities King is physically stronger, faster, can fly, more durable, better endurance, probably better or equal with the sword, has more experience, is better with hand to hand combat and has fire/magma attacks that can make a lot of damage.
I see Law taking this very high diff with Kings speed and AP causing Law big problems but in the end Law wins by whipping out an Ope Ope attack that stops King. But Laws powers are so broken that he could even 1HKO 99 % of the verse if Oda doesn't find different answers as to how characters should counter him.