Nope.
I work in the computer/network Service Desk industry and $$$ has nothing to do with cognitive ability.
About half of the staff is black.
All aspects of the analysts performance are measured to the second, documentation that was utilized, recorded calls analyzed and scored, percentage of first call resolution, follow up, research and resolution, etc, etc.
95% of the blacks on the desk comprise the entire bottom half of the stats for the desk.
After the AA hiring of the tech it is "sorry, private sector looks at only the facts."
Once they are active on the Desk the difference shocking.
.
Culture or intellect... what's your best guess..