If Souji switched you know Kune is weak compared to the rest of the cast.
Look at the top tier. Litchi, Tao, Valk, Haku, Hazama, Jin. All of those are looking to be shitty matchups. Even at best vs Jin.
That's not even counting V-13, Mu-12, and the other characters that look like they just maul his ass now. Fuck Kune.