Increased 'charge attack damage for copper spear

As much as i love using copper tools, the copper spear is a little disappointing, sharing similar damage to the stone spear while having a longer cooldown and attack speed, only increasing durability by a small amount. My proposed change would be to increase the "Charge attack" multiplier from 0.82x damage up to 0.90x or 0.95x for the copper spear, this change would be great for the natural progression in Minecraft, upgrading to better ores instead of sticking with the currently superior stone spear.

Plus, wouldn't it make way more sense for heavier and sharper copper spear to be better for charging at your enemies than a stone spear?