Not counting the added features, font and emoji changes since those are all subjective.
Since it was made available to me (T-Mobile S22 128GB) I’ve WAY less frame drops and the animations themselves seem smoother.
I haven’t had it long enough to notice a difference in battery performance but it’s something I plan to pay close attention to considering the terrible battery life the base S22 has had previously.
New updates Don’t make phone battery worse as far as i have noticed after a new update phone battery drains slightly faster, but after a week it goes away when the system and hardwares adapt to the new version better. People need to be patience, phone needs some time to adjust to a new version.