Not that I disagree with the overall point of your post.
But Zoro with Shisui pre-training >> Zoro with Enma pre-training, in a fight.
Not being able to control his attacks & dealing with the haki strain is simply too much of a nerf to face against a Zoro who can dish out w.e attack he wants without any strain.
Zoro with Enma after training =/< Zoro with Shisui after training, I agree with tho.
But Zoro with Shisui pre-training >> Zoro with Enma pre-training, in a fight.
Not being able to control his attacks & dealing with the haki strain is simply too much of a nerf to face against a Zoro who can dish out w.e attack he wants without any strain.
Zoro with Enma after training =/< Zoro with Shisui after training, I agree with tho.