I think wowo gets some pretty hefty trade offs for not having any set ups, a weak cross up game, weak pressure, and long ranged knock downs that puts her at a high mid to high tier when compared against each mu.
I actually think this was all intentional by nrs which I applaud them for because I think it works and makes her a strong defensive character she was designed to be, actually almost TOO STRONG in certain mu's.
The tradeoff for all of the above is that she doesn't have to "hold" anything.
She doesn't have pressure because her 6f poke and reversals shut down being abused by plus frames/ shimmy pressure.
She doesn't have much oki opportunity because she doesn't have to hold oki as having the best wake ups in the game and avoiding many situations where she can be crossed up/ mixed.
Her corner game is top 5 in my opinion. You have an opportunity to meterlessly stuff 2/3 of the cast's wake ups and put in a position to lock down jumping, tech rolling, teleporting, mb armor, counter poking, you can take entire life bars with her corner advantage.
She easily and effectively armor breaks, wiff punishes, plays mind games with her neutral and forces the opponent to correctly read their own follow ups because a wrong offensive or zoning decision will result in heavy damage or a vulnerable defensive position.
Her worst mus involve getting counter zoned and out footsied like Starfire, GL, Ivy, Blue Beetle, and Fate, but definitely not to the point to where it's Braindead, and at worst her mu being a 4-6 situation.
Overall, yeah she's not much of an "overwhelm them with mix/ buttons/ oki/ pew pew pew" top tier character, she's a "shut down "x" situation and make them second guess their offense and zoning decisions" which in my experience makes every match exciting, fresh, engaging and satisfying.
Nrs did a great job with her character imo they get my kudos.