I've found a very interesting video on the relation between nerfs and buffs between characters, I'll keep it short and sweet and post a link to said video below because the man speaking there can explain just as well as I can, and gives great advice.


Buffs: Buffing Weaker characters elevates the overall game and makes things more intense, its like that saying from The Incredibles. "When everyone is Super, no one will be", Rather than nerf one overpowered character, it is better to add more strength to weaker ones so they can step into the spotlight.


Nerfs: When you nerf something, it should only ever be a universal factor shared between all characters, an adjustment of the games core mechanics, such as the block breaks, revenge meter buildup or dash distance, never a single character. Because human beings feel loss heavier than gain, more in the video below.

[Analysis, Why we should Buff more than Nerf]; https://www.youtube.com/watch?v=bsC8io4w1sY