Okay. But she isnt. Her physical power and chakra exceeds KCM. And she can heal instantaneously. Katsuyu is near indestructible and Sakura basically unkillable. The acid burns through anything also.I replied to OT, that Sakura is like an ant to their powers.
All this puts her with them. Only thing missing is some form of ninjutsu.
It is rather wrong to deny kishis portrayal. The op is right.