You're looking at the overalls which is bad, what specific stats do you think should be lowered? Power, head movment? And what overall do you think she should be if we aren't raising Rose from 90? 89, 91? Because one overall point is 7 stat points spread across the individual ratings So if you want to equalise her and Rose's overalls, what 28 stat points should she lose? If you drop her power by 3 points to 88, which is a change I'd be fine with, she stays at a 94 overall.
You want her stats to be lowered, which stats and by how much? Bearing in mind that she has shown her self to be massively better than basically everyone but Rose on the feet in that division. Nerfing Joanna isn't the way to go, it's buffing Rose's power, footwork, speed and head movement in my opinion.
Also, the switch stat is making the overall gap larger between the two than it actually is in real terms, ignoring that stat, Rose is 92 and Joanna is 94