Hiro and Moana have their similarities and differences. Both of them have a strong sense of justice and a desire to do what's right, though they often make mistakes. They also love their families deeply and have had to deal with the loss of a loved one.
Their differences come with their personalities. Both of them are adventurous, but Hiro is more sarcastic and serious, while Moana has more a whimsical and brash personality. Both of them are strong leaders, but they possess different talents, with Moana being more athletic while Hiro is more intellectual. Fans see these traits to balance each other well, and the two would likely get along well.