You will reach an equilibrium after gaining a not insignificant amount of weight, but of course hunger hormones tend to increase as well. But my point stands t

You will reach an equilibrium after gaining a not insignificant amount of weight, but of course hunger hormones tend to increase as well. But my point stands that a few percentage points difference in metabolic rate makes a big difference. And likely could lead to one person becoming overweight while another person with identical habits maintains a healthy weight.