Because Balance is not a CHANCE to do bigger damage like crit up. It is not making you hit a little faster like arrow.
It is a flat out damage increase with everything you do. Even a little bit does more than a chance to crit more or being a little bit faster.

If you think balance is anything but unbalanced, you have never thought about how strong balance is. It got nerfed already and it still does the best effect out of all of the cards by default because incresing damage is just good. It's unbalanced in comparison to every other card ast can do.

Every card will be balance because if every card makes you stronger, no other card can be complained about, no card is bad in comparison, no card can just have a weaker effect since they're all damage up. AND everybody wants balance if they know what it does.

That is what i mean, balance really is not balanced at all