I see a huge difference in the tribal warfare and physical killing of the OT and in the Protestant belief of creating the bulk of humanity in order to condemn them to hell.
The only difference I see is the difference in time. Some HAVE happened, some WILL happen.
God’s will will prevail. There are no other alternatives if you believe in a sovreign God. God destroys what he wills. God creates what he wills. NO difference that I see. It is all God’s will.