Here in these scenes, Hiro is using the same words while he's a superhero, that tadashi said to him. Hiro thought those were things a good superhero would say to others. Which means that Hiro saw Tadashi as a true hero.
THIS IS ACCURATE. Thank Goodness I'm not the only one who thought that cartoon guy was attractive. <<< Honey, there is a whole world of people who think animated people are attracted. Anime and cartoon.