I don't think that stands to reason at all. That sounds laughable, especially in the context of the heinous things American society did to purposefully black families from "achieving their potential". While immigrant families' ancestors were in their home countries accruing assets, educational opportunities, and (relatively more) equal access to what their country had to offer, black people here were held back from their white peers. Home equity, educational opportunities, freedom from police harassment, the ability to organize politically without facing literal terrorism.