No, rockhopper and macaroni penguins are different, though there’re discussions on whether their relative pieces.
From their size, we can tell that both species are different: macaroni (61-69cm) is larger than all rockhopper penguins (45-58cm).
Also, the yellow feathers on their head help us identify them. For macaroni, the yellow crest feathers are on the whole forehead. And for rockhoppers, the yellow features are like two separated eyebrows.