[quote=HazmatMedic]
But think of training. If I was trained to be lightweight, agile and evasive, I will be more manuverable than other soldiers. If i was trained to wade into battle and fight as a man-at-arms, with plates and tower shields, i'd put more faith in my armour and think less about dodging.
[/quote]

[quote]The reports of the chroniclers leave little doubt that the medieval knights were indeed in excellent physical condition. According to his biographer, Bousciacaut, famous chevalier and Maréchal of France, could in his youth turn a summersault in full armor, except for his helmet, and scale the inside a ladder equipped in harness by pulling himself up by the arms.[/quote] - Painter, Sidney. [i]French Chivalry: Chivalric Ideas and Practices in Medieval France.[/i] Johns Hopkins Press, 1940.

Sounds pretty agile to me. I think you misunderstand the reality of medieval warriors' abilities with that of 'classes' prevalent in fantasy genres.