They do balancing, but the main issues are that their balancing cycle is very long, they have some pathological need to re-invent wheels, and when they drop major balance changes they drop so many changes at once that I bet even they can’t keep up with the myriads of changes to an aspect they are attempting to balance; not to mention a few instances where some teams may not be talking with each other so that there are multiple changes to multiple layers that all target the same in-game behaviour, usually resulting in overcorrections, compounding and unintended effects.