[quote=HazmatMedic]
Think about itThe Brute is wearing what I would have called "Plate armour" Very rigid-looking, bulky and almost entirely full body.The Papal guard, however, only seems to have plate pauldrons, gauntlets and boots, and a helmet. He also appears to be wearing something under his chest insignia, but I can't quite see what.And the Captain is wearing a Chestplate, pauldrons, gauntlets and boots, and a helmet. He's very well protected, but it's not all bulky and stiff-looking. I doubt he could duck and weave as easily as someone in lighter armours, but it certainly doesn't seem very obstructive.
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I conclude the misconceptions you have about armor are due to ridiculous fantasy concepts, considering the images you posted. Whoever designed them probably knew very little about the form and function of actual armor of the medieval period.
A full suit of historical medieval armor provided nearly as much agility and freedom of movement as you'd have without it, while protecting the body from the sharp edges of weapons. It combines function and practical form, none of which your fantasy concepts do.