I'm starting to realise the dude is phoney. Up until now, his continuous winning in life has only been because he was merely undefeated, not victorious. He maintained his superiority by beating weaklings and avoiding real challenges. It's extremely easy to see because the girl barely needs to do anything to win against him. The real question is why he judged her a weakling in the beginning. You'd think he would have honed his ability to recognise easy targets to perfection over the years. But then again, even the best make mistakes sometimes.