Exactly, equal power and attack speed, since they prepared the attack at the same time, hit King and Queen also in the same moment and they were exactly in the same place, also King and Queen got thrown away in the same spot, lying on the ground.
Especially when you consider the fact that Queen has more durability feats than King through and through.
They are atleast equally durable by the end of the day
And lets consider the difference between an attack charged with Enma, and a random Santoryuu move, there are differences here