No it is not. Their criterion - and most everybody else's - is BMI>30. Which means that the only factor taken into account is height, nothing else. Not sex, not

No it is not. Their criterion - and most everybody else's - is BMI>30. Which means that the only factor taken into account is height, nothing else. Not sex, not muscle mass, not age. The reason why it still works for large populations is that very few people are freakishly short or tall, and pretty few are roided-up body builders.