The point? More leverage, namely, when used when wrestling to deal more damage like break bone or to free your weapon in a bind. That's just one thought.
When wrestling is added in IVAN, sure, but it doesn't have that. The system is much simpler.
So wouldn't duel wielding two weapons double your damage output?
You don't see people duel wield handguns, melee weapons while they're not nearly as precise as guns, they wouldn't be just twice as effective as using one weapon in two hands.
It does, I think. At least it is very effective. A lategame IVAN character usually has insane dex, so why wouldn't an extremely dexterous person be able to use two weapons effectively? Even in the real world people used two weapons, to have more combat flexibility and to be able to parry much better. The damage and STR isn't everything.
Though I'm sure if you had super strength, using a weapon would still help with piercing damage or range. You would just break the weapon really fast as the drawback; thus you'd want a tough weapon like a mace or a club.
STR already influences weapons enough, I don't think there is any need to complicate it. Weapon breaking according to STR could lead to unplayable games, as some characters reach >400 STR with artificial limbs