"Sanji's feat is less impressive since Luffy could dodge Katakuri during all the fight" -> your argument
Implying that since Luffy did it so many times, it means anyone can do it, implying that Katakuri and Luffy are slow.
Don't play dumb.
Edit: another example.
Let's say Kizaru combat speed is lightspeed. Since any top tier could fight against him, his speed is not impressive, despite being lightspeed (300 000 km/s). Oh look, anyone can fight him -> therefore -> speedlight is slow