Both caused a disruption in each teams season, adding unnecessary drama and conflict. Both players also had high expectations of them, but both ended their time at the club poorly due to their interviews (yeah Lukaku’s still technically at Chelsea, but he doesn’t really feel like one anymore with him getting loaned out every season).
lukaku’s interview was definitely worse, it felt disrespectful and didn’t sit well with the fans. ronaldo’s at least had more thought put into it, even if it raised concerns.