With his own flight and speed amp amplified by his own enhanced senses plus Precog would allow him to close the distance quite well. Combined with the fact that he is can also can fire at range with ease too due to the nature of his weapons.
Combined with various homing attacks and summons energy avatar that can act independently of Vulcan himself and shown to block attack/harm being with people higher on the scaling chain. It wouldn't be too hard for him to close the distance or continue to peppering Zoro.
The scaling chain in Kamen Rider are around the same level with Finisher. Depend on character people can goes from doing no damage and barely hanging on to borderline one-shot. But I could say that Vulcan is on the lesser case.
To explain how Precog in Zero-One work it's basically Record of Ragnarok's Kojiro's style. Detailing entire battle scenarios up in less than a second flat. Start off with Dodo Magia which after merely being exposed to new abilities like TPs spams and stat amp he managed to adapt to that in a few seconds flat.
This would get absolutely trounced by
Zero-One's Shining Hopper's Shining Arithmetic
"Shining Arithmetic (シャイニングアリスマティック, Shainingu Arisumatikku): Shining Hopper's arithmetic processing unit. Located around the forehead. It predicts enemy behaviour by studying them and creates around 25,000 attack and avoidance patterns in consideration of Zero-One's own performance. From there, it is possible to find an optimal solution to a problem within 0.01 seconds. It's high-speed learning abilities can advance in battle."
Or according to Izu, one of the people helping to create the Key in the first place, describe as reviewing all combat patterns. The thing about Shining Arithmetic is that it is create for the sole reason to **** with precog like Dodo Magia as well.
Then that form get trounced by
Thousand Signal which is basically Shining Arithmetic on steroid.
All of that get trounced by every single Rider post mid-series because they are just that good.
And by EoS, Vulcan land a singular hit on Kamen Rider Zero-Two. Someone who's precog trump the like of
Ark. How good is Ark's precog? You would be looking at it's core.
"Ark Drive Core (アークドライブコア, Āku Doraibu Koa) - The source of the Satellite Ark. By analyzing a huge amount of learned data in real time, we can draw hundreds of millions of "conclusions for events". Also stored are the fluid metals that make up the various equipment."
And Ark itself can read the thought of it's opponent and the action leading up to it. The satellite Zea, Ark's sister unit, while in it's dormant state can
billions of simulations in less than a second to combat against Ark.
Among thing that Zea has predict.
-Making Shining Hopper Key being compatible with Assault Grip, an item that doesn't exist during the time of SH Key creation.
-Managed to correctly deduced that the current dystopia world during the event of the movie
are cause by history being overwrite.
Among other things.
Vulcan himself have managed to precog a stealth attack from someone going into blitz speed. That feat was done when the two was having around the same scaling of their precog.
That really doesn't matter since any of Vulcan finisher have tendency to cause enemies to explode from inside out. There's an entire compliation of it on youtube. And his poison is the same as Horobi which do this
this (3:45) at its bare minimum application. His ice manip can flash freeze opponent as well.
And his RPL is...well yeah I already state that. This is why someone like Zero-One have 6-C in his base key. As it can easily trigger mid-fight by the time post mid-series.
Edit: For skill feats, there isn't much to show since this is a kid show. But among them include him shooting bullet out of mid air with his own in civilian key much earlier into the series. And later he's able to kept up with Precog nonsense with his own sheer skill without any arithmetic.
And for dura, Fuwa have been shown to be the toughest dude in the series as a human. Managed to fight in his Assault Wolf form which have no oxygen supply, constantly damage the user to the point of causing the classic "violently coughing up blood" syndrome. Able to survive the enhanced and boost attack from Horobi's stinger which you have seen how potent the poison is. And Rider system itself also help mending broken bones together during the fight.
