Is it same thing as making fun of names? that probably every country does - e.g saying "average Joe"?

if yes, then how is this associated with racism?

Read the paper, as it's not just those two names. Black names are undeniably discriminated against at the earliest points of the employment process.

This is something I like to bring up, since it's a great example of a microcosm of discrimination that it's easy to not think about. There's a black saying that blacks have to work twice as hard to get half as far, and the data seems to be remarkably close to that assessment.