This one.
So, equality does not speak to treatment in politics and law. It is about value status. Equity is about fairness.
Much of feminism has been fighting for fairness but this has been predicated on the (radical I know) notion that men and women are equal (in value) and therefore should have equal in status in society.
What it has never been about is saying that men and women have the same needs.
What is equitable is decided with reference to value. In a modern democracy this is done via consensus and evidence (may be entirely subjective, is vulnerable to domination by powerful group).
Women have largely suffered throughout history IMO because what was equitable was decided based on women being seen as of lesser value. This is why seeing women as of equal value and women having equal status is important - largely as a foundation for deciding what is equitable.
The pictures do not articulate the difference between equality and equity to me. Rather they show; sharing things out equally and (different to equality and does not indicate those three people have equal value or status in society, rather that sharing things out equally without regard to need perpetuates inequality of opportunity), and equitable treatment based on seeing each person as of equal value and therefore providing according to need.
The left hand picture in fact represents what a significant number of people think of as a fair distribution of resources (the therefore equitable).
We need a statement of equality of value for different groups in order for judgements of what is fair to be made with regard to differing needs IMO.