She's currently one of the strongest characters in the game
I would like some of whatever you are smoking. She's in a really weak place.
Her win rate is only high because the dedicated players who still main her are very good players. Bad players don't pick her because her abilities are so poor that they don't provide any sort of crutch.
Ironically, if you buffed her to the point that she attracts average players then you can expect to see her win rate stay the same or drop as lower skill players bring the average down.
Edit: You can downvote me if you want but none of you can possibly believe that Wattson is a strong legend. She's not but she's got strong and small base of players who main her. Saying that she is one of the strongest legends just shows how out of touch the Devs are and goes a long way to explaining why so many of the balancing changes are so nonsensical.
I mean I'm looking at the data. You can argue with me if you want, and it's certainly valid that you have a different experience, but you've gotta remember that millions and millions of people play this game, and you only ever see a tiny slice.