Any objective look at balance is going to be hard this early on. Everyone will have a character they will lean towards that suits their playstyle but we also need to not shout OP every time someone is on a hot streak.
Obviously there are some toons that seem super buff at the moment but individual skill is also a pretty big factor.
Eg. I love the look and feel of Rath, see him high on the scoreboard fairly regularly and do a bit of brown when he comes running at me. However, i’m terrible at playing him. Can’t get the timing, tactic, whatever. I suck. On the other hand, I have had great success with Oscar Mike. He also may have a couple of moves which maybe, sorta might be a tiny bit OP, but again, suits my playstyle for whatever reason. I also see some not so good OMs who do nothing for a whole match. Seen some cannon fodder Miko’s, but seen some who rock the Biosynthesis build and I opt to commit honorable Seppuku to save myself the trouble.
General balance is all well and good but character variety is what these games are built upon. If everyone is same same, it’s grey and boring.