Any diff splits torque biasing the wheel with less traction (higher % of available torque). If one wheel can only use X amount of torque the other gets Total torque available – X. LSDs limit the amount of torque difference.
When traction is present both LSD and open diffs would distribute torque similarly. Its when traction is reduced that they perform differently and these situations are not such a concern for hardware. So I believe halfshafts would see similar “max” torque no matter the diff.
I guess if one wheel could utilize >50% of the max engine torque then it could be a concern, but typically this would be low traction and available torque reduced (reduced load). This is probably a wheel hop situation.
FYI: I’m a little fuzzy on diffs though.