If it took two people to put on the armour, it was usually because of ties and buckles that couldn't be reached by the person wearing it, or pieces that required one person to hold it in place while a second pair of hands fastened it. The idea that the swords were heavy back in the day is false as well. A properly made one-handed or hand-and-a-half European sword from the Middle Ages weighed in at 2-3 pounds. That's the same range used for professional baseball and softball bats, and most people don't do around considering those heavy and unwieldy. The sword, in fact, feels lighter when held because the weight is more equally distributed and not loaded toward the end as in a bat.