I think you’re missing the point of the comic. Time is progressing for both women, and the people talking to them in the comments have questions based on where that woman is in her life and development.

While both women are in the same stage of life, the questions being asked are not the same questions.

The people asking que to the the woman of colour are brining a bucket load of presumptions to the conversation.

The comic is pointing out how racial prejudice or even innocent assumptions are forms of microagressions, as the questions asked to the white woman are mostly purely information gathering, where as the questions towards the black woman first require her to correct a misconception before she can even answer the question.