Actress Katie Leung has lavished praise on her Harry Potter co-star Emma Watson - and denies there is any rivalry between the pair. The newcomer - who plays the boy wizard's love interest in Harry Potter And The Order Of The Phoenix - has praised the franchise's veteran female Watson for her determined outlook on life. She says, "(Watson) just knows what she wants; she's very confident and so intelligent; she got so many A-stars in her exams. "I don't know how she manages it."