The Way Sterak's Was Nerfed Makes No Sense

In the patch notes, Riot lamented that Sterak's was often purchased on more classes than they intended since it's an item which deals with either damage type well. However, they reduced the HP on it by 100 (or 2.67*130 = 347 gold less efficiency counting the shield) without buffing the shield ratio in any way. If they want it to be more Bruiser/Tank/Juggernaut focused, then I understand nerfing the HP on it but only if the shield is made to scale better with the intended classes.