Women are curvier thicker fuller built than men yet why considered weaker?

In general average woman/girl has fuller thicker curvier looking apperance while an average man looks bonier skinnier than her...
Yet why are men, in general , considered more powerful stronger than women who look fuller thicker?
Women are curvier thicker fuller built than men yet why considered weaker?
Women are curvier thicker fuller built than men yet why considered weaker?
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