Sorry, but there are several things problematic about that study, if your description is accurate.
Just one of the issues is the specific perception regarding that particular sport (basketball) and relative perceptions between sex differentiated similar sports (men’s and women’s basketball are not the same sport, albeit similar). A sport should have been chosen where there are as few differentiating perceptions as possible, which is nearly impossible, because men are inherently more competent at sport due to physiological realities. It bakes in a bias towards men, which is what you likely actually confirmed with the study you described.
Introducing sports alone essentially corrupted that research and likely biased the responses for relative innate competency of males in sports.
For example, ignoring its own challenges, what could have been done, is show video of a relatively broadly positively evaluated sport (not basketball), an activity that is also relatively broadly and positively evaluated female clustered competencies, e.g., effective child rearing, communicating effectively, conflict resolution, creative outputs, or even beauty pageants, etc., along with the inverse, i.e., poor performance of men in the same sport and poor performance of women in whatever is chosen, e.g., screaming and yelling at poorly behaved children.
It is in the past and by no means are or were you the only one who has long engaged in this type of poorly executed “research” that has merely been confirming researcher biases and often, thereby immensely damaging society, but maybe my illustration of a few of the several issues with what you described, will cause some changes in thinking.
There is a real hidden epidemic of not only single order thinking, but what really should be called negative order thinking in research, where research is not only not finding the truth, but rather even doing damage through confidence in false findings.
I say these things with an expensive relevant background, in the trenches of bad and … frankly … destructive research, if you will.