I do not think that we have any evidence to say that Egyptian women were "stronger" than men either physically or in terms of political or social power. Women in Egypt (especially later Ancient Egypt) had legal rights that were the same as those of the men. However, it does not seem that their actual power was as great.
We do know that women had legal rights. They could make contracts and hold property, for example. (These are rights that women did not even have in Europe or the United States until the last 100 years or so.) In this way, they were equal.
However, women were much less likely to hold positions of political power than men were. So, in this way, they were not as "strong" as the men.