No you’re just making false statements.
This should not be how armour is presented in the game, unless it’ been sitting in a muddy field for several weeks.

And there is a thing called maintenance. Which would have been done frequently with armour and weapons. Their armour was an expensive tool, that gave them status, and would save their life. They would make sure it was in excellent condition.
Furthermore if the armour gets trashed enough, or weathered, the knight in question might even just replace it.
Most movies go for the “dirty thrown together weathered” look when it comes to armour. Examples being, Vikings, Ironclad, Brave heart, Lord of the rings, Game of thrones, ect. All of these are extremely high budget ( exception being Ironclad, but it was still high budget enough to have some big names in there).
And it’s not historically accurate. Armour would have been well maintained, period.
God awful comparison.
12th Century armour would have been similar to what the Normans wore. 15th century we;re seeing full plate. Throwing tech that out of date in the game, is just a little more of an issue than a naisl piece not being .0001 centimetres to the left.