Who Would You Prefer,oprah Or J J Rowlins?

Hello people,
i would like 2 kn who u would prefer in this 2 most richest celebrities,dnt lets b sentimetal about 1 being black,who would u prefer between OPRAH and J K ROWLINS?
As 4 me i would prefer J K ROWLINS because she writes about my favourite movie nd book harry porter.