Manga already showed in the past that she can't hold strong people with the hold of the fruit. Zoro forcefully broke free once and even his zombie during the thriller bark managed. Her fruit is good against speedsters, but against people capable to overcome her ability with brute force, it's useless.
It's also useless against Luffy who is invulnerable to blunt damage or logias, even some paramecias as well like Gladius counter her ability perfectly. Not to mention the limbs she create render her vulnerable to attacks(if you hit the limbs, she feels pain as well), like we've seen how Sugar turned him into a toy. While deadly, her devil fruit has greater weakness than people think. This chapter proved she is stronger than Brook, but not sure about Franky, but she certainly isn't a M3. She is in the mid trio