Zoro has reacted to stuff FS Luffy failed to react to:
- Batman's Arrows
- He warned Luffy about Apoo's explosions
- He saved Luffy from Heavenly Fire
- He saved Luffy from Boro Breath
Saving Luffy from potshots the yonko are making using 2vs1 tactics against Luffy doesn't mean Zoro's reactions are better, it's easier to guard someone else against potshots when you aren't being attacked yourself, do you think Law has better reactions that Luffy too?
Zoro doesn't have FS and doesn't have durability or stamina at the same level of the Luffy that fought Katakuri.
Base pre-udon Luffy destroys pre enma training Zoro. Not even a debate.