One point of resistance gives 1% effective extra health no matter how much you already have.
100 armor give 50% reduction (100/100+100) while 200 armor give 66% (100/100+200)
The percentage 50 -> 66% is shown ingame and players often think the value per point of armor drops.
What does actually happen is your effective bonus health changes from +100% to +200% and every additional point will be worth the same
One point of resistance gives 1% effective extra health no matter how much you already have.
100 armor give 50% reduction (100/100+100) while 200 armor give 66% (100/100+200)
The percentage 50 -> 66% is shown ingame and players often think the value per point of armor drops.
What does actually happen is your effective bonus health changes from +100% to +200% and every additional point will be worth the same