Whether it was pulling you limb from limb, or just crushing you under their demented ravening weight, they'd have you in plate armour pretty quick I reckon. I've tried a curass and greaves on and, even without the proper double layer of padding underneath, it was bloody heavy to march around in carrying a wooden sword. There's a reason medieval soldiers spent a lot of time training in their armour: you need to be proper cardio fit.
Trust me if you haven't experienced it, there's a big difference between gymn fit and carrying a load of weight for fucking miles and still being able to jump around at the end of it. Part of it is training your metabolism to work at higher efficiency to make energy available to you for extended periods. Instead of the usual thing our bodies do of sequestering carbs for production of fat, the in between stage, glycogen, becomes more important - it is easier for the body to convert it back into sugars than to break down fat, but to do this a lot demands a great deal from the liver and can also lead to blood chemistry and urinary problems - basically it's like an engine: if there's anything at all wrong with it, running it hot up and down motorways will cause it to break down faster than pootling around town...
The average fitness of people i see at airsoft, i'd give them about 15s explosive energy with a two handed melee weapon of some kind and if that hadn't bought them a clear route to run away they'd be fucked, because it would be all downhill from there...
