Lanefan
Victoria Rules
Meh - it maps the narrative to the mechanics. In 1e RAW a shield gives 1 point* of AC, so if that last point is what makes the attack a miss it's logical enough to say the shield is what made the difference.I'm not aware of any such rule, and to me it seems quite unrealistic that a warrior carrying a shield would be using it to deflect/block only 1 in 10 (or thereabouts) of blows.
* - we houseruled it to give 2 points, and 7 years later 2e caught up with us.
