Downgraded my armor from Sarranid Guard Armor (46 armor, 14.5 weight) to Byrnie(36 armor, 8.6 weight) with heavy armor, gloves, and decent shoes and couldn't tell much of a difference from before. I could still tank quite a few hits since I would rarely get 1shot due to the heavy helmet.
Still pretty slow when I have the shield on, though, even though I have like 7 less weight.
Probably reinforces my earlier belief that medium range is the way to go. I prefer the heavier side of the spectrum in the end, though.