Worstgen
TheAncientCenturion
Luffy vs Queen = Luffy very High difficulty. The issue with this fight is that Queen is an ancient zoan whose main take away is mass, the odds of Queen being awakened even higher, making the situation tricky. I think Luffy wins at the end of the day but it's going to be a match that takes plenty of time. There's also the risk of Queen unleashing a plague, but we'll have to see if he keeps them on him at all times.
TheAncientCenturion
Katakuri vs King = King wins Extreme Diff. Out of all the FMs, I have Kata as the weakest. King/Marco both serve the "strongest" Yonkou of their eras. Both have been propositioned by rival Yonkou as well. Ben Beckman is a Vice-Captain giving him arguably the best hype out of FMs and Shiryuu is the right hand man of Luffy's greatest PK rival.