Google did stats for this and there was no difference. Not sure if they are viewable outside Google. Google is about as equal as you can get on these points sin

Google did stats for this and there was no difference. Not sure if they are viewable outside Google. Google is about as equal as you can get on these points since they are really easy to fix via top down mandates and asking pointed questions at those who don't fall inline. They have quotas over how many should get promoted in each org etc, having race and gender play into that is super easy.