In real life,
Plate mail (and noble knights wearing plate mail) sucks. Because it's unbelieveable heavy, it disincreases your movement ability. A schitar or cutlass and a light but protective armour (which made of elephant's ears-do you know who are using these armors?) can be much better for fighting. And we all know that the heavy infantries (crusaders) had very hard time during the crusades in medieval age.
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