I don’t remember mentioning “huge armor”, a.k.a. plate armor.
Still, do you really wanna engage in a historical dispute. I mean I see a lot of logical mistakes already. For example:
So while body armor evolved from Chainmail and Lamellar armour to Full Plate, the helmet remained almost the same. It was already just a piece of metal. All that changed later on was the addition of the visor. So headshot option was as viable.
If the armor is indestructible, how does 2h sword help fighting it? Why use it at all then? Why not use a nail in the first place?
Moreover, if it was impenetrable, why did melee weaponry continued evolving. I mean it’s obviously useless against “huge armor”, why bother. Pollaxe, Ahlspiess, War Hammer, Bec de corbin - all theses weapons ere invented in late medieval times.
Why did they keep producing all other useless melee weapons, that you can now find in museums? Why do we see weapons other than greatswords and daggers?
How did British archers manage to defeat French knights at the Battle of Crécy in their indestructible armor?
Now let me show you how “impenetrable” fullplate actually is
As you can see- pretty penetrable. But the fun is, that is not important as much, because as you can see, and that’s more important, it is breakable. After several hits the armor gets crumpled, and any further damage will go through it, affecting the wielder directly.
I can’t find a video of a full plate knight beaten to death with a mace, but you can see how it works based on the example of a steel can
There is also a vid of a Lamellar armour being hit by morgenster.
Full Plate is more resistant to hits, but the principle is the same.
So in conclusion let me repeat once more: if melee weapons were not effective against medieval armor, they wouldn’t be used. And mace was one of those weapons. So telling that it was useless is absurd.