Breach makes Leather Armor and Netherite Armor protection nearly identical

The Breach enchantment causes protection IV leather armor and protection IV netherite armor to protect nearly the same amount, so much so to the point that with Strength 2, a player wearing either leather or netherite armor will take 4 critical hits to be defeated.

This would not be the case if Breach negated armor less (ie: -5% per level rather than -15% per level), and the mace's base damage was higher instead (ie: 11 attack damage rather than 6 attack damage).

In the attached video, both skeletons, one wearing prot 4 leather and the other wearing prot 4 netherite, take 4 critical hits with a Breach IV mace and Strength II to defeat.

Steps to Reproduce:

1. Spawn two skeletons with no AI that can pick up loot

   /summon skeleton ~ ~ ~ {NoAI:1,CanPickUpLoot:1b}

2. Give the skeletons full prot 4 leather armor and full prot 4 netherite armor respectively
3. Give yourself Strength 2 and a Breach 4 mace
4. Observe that both entities take 4 critical hits to kill, even though one is wearing leather and the other is wearing netherite

Expected Result: The skeleton wearing prot 4 netherite takes more critical hits to kill than than the skeleton wearing prot 4 leather when the user has strength 2

Observed Result: Both skeletons take 4 critical hits to kill, due to the overtuned strength of the Breach enchantment combined with the undertuned base damage of the mace