Been trying real hard to make comparison with martial cultivation stage Skin Toughening with Luke Cage's skin.
The Skin Toughening Stage is always:
Ox Hide (Leather): Minor Blade and Impact Resistant with Small Strength Boost.
Stone Skin: Medium, Medium
Copper/ Iron/ Metal Skin: Major, etc.
Then I realize, Luke is bulletproof, the ultimate Blade and Impact Resistant.

Reactions: NotaNuffian