If you put a gun to my head and asked me if EOS Zoro would best Roger, I would have to go with yes. This is not because I think Oda categorises Roger as a swordsman (I would remain agnostic on that). It's simply because I think there's a good chance that EOS Luffy/EOS antagonist can low/mid diff MF Sakazuki.
With the reveal of Im sama, Naruto/Bleach style EOS power inflation is very much on the table.
Ugh, some folks are really arguing that Mihawk > Roger. :pepeke:
Honestly speaking, the absolute best Mihawk can hope for is to push Roger to the lower ends of high diff.
It doesn't matter that Roger lacks a black blade or appear to be a swordsman, Mihawk's inferiority to Old WB is much more established than speculations about what exactly a black blade means for a swordsman.