Jun has never once treated her as a prize to be won. What he’s fighting for is her fathers permission, not her love or the relationship which he already got through his own actions instead of a competition. He could have dated her behind the fathers back but Jun is his student and the culture entails that kind of respect in general. Don’t devalue what he’s doing in trying to gain the fathers blessing as a competition to gain a prize.
Jun, who has toiled endlessly about how to approach tomo and how to consider his feelings for her over 900+ chapters, deserves far more credit instead of saying “he treats her like a prize to be won”. That clearly is not the case.