Two Buttons

Making enchanted netherite armor

if both of those options are open to you, then you can make enchanted netherite armor.

Full enchanted iron is better than unenchanted netherite

It depends on the enchantments, for example iron with unbreaking 1, protection 1, or a curse isn't better than netherite

I meant full prot 4 and unbreaking 3

Then it is better. Enchanted diamond just sounded better