You haven't read CFYOW have you? Thanks to that novel we have an idea of how Barragán compares to the current captains and I inform you that his level of power is closer to Kempachi than to Suí fēng.

This is why I really do hate CFYOW because you realize how retarded this sentence is in earnest once you see it being said outright like this.
Barragan is comparable to current Captains and his level of power is closer to Kenpachi... than to Sui Feng...
This is despite the fact that even going all out, Barragan couldn't overpower Hachigen and his Kidou Barriers, lost a good chunk of his head to Sui Feng's Bankai and was utterly made a fool out of by Aizen(Unless we are pretending that Shinigami Aizen is still above the EoS Captains which is... no).
Maybe it's me that I remember the fight wrong
To say it early, yes... yes you did remember the fight wrong.
but at no time was it seen that Suí fēng was comparable to Barragan
Her Bankai requiring Barragan to detonate it before it hit him and him losing a good chunk of his skull to the other speaks otherwise.
she couldn't touch him due to time dilation while he without effort with a simple touch of his hand aged his bones until they broke them.
And he literally stated why Sui-Feng couldn't hit him easily and yet tries to put a bow on it as if it wasn't because of his aging ability fucking her up AND slowing down her attacks...
Yeah, he did have a stat advantage even before going Ressurcion but let's not pretend that was not crippling for her even then.
Then when he activated his resurrección he almost disintegrated her with his respira, even when he used his bankai it was useless since he couldn't reach it.
Wat? His Respira disintegrated damn near everyone who fought him and again, her Bankai only failed the first time as he used Respira to pre-detonate it... meaning it would have hurt him considering we later seen that it did.
It wasn't until Hachi arrived at the battle that she finally managed to hit him with her bankai and even then that wasn't enough to defeat him, if it weren't for Hachi who sacrificed one of his arms to kill Barragan with his own technique. combat would have ended with the defeat of Suí fēng.
Yes, only due to his absolutely broken ability that hard-counters everything Sui-Feng does...
adrmas, I was talking about Hikone, not Ikomikidomoe or Cien.
My dude, Hikone is overrated to hell and back and couldn't do shit to Kenpachi with an eyepatch and not using his Shikai and that was at his strongest and Narita tends to wank Kenpachi ridiculously even then(In comparison to the show where Kenpachi is strong but he was not the biggest ace against Gerard nor beyond Byakuya or Hitsugaya even then).
Ikomikidomoe literally just has him being comparable to Barragan which has so many cans of worms being open when you realize it fucks with the scaling and powers of the last 2 arcs if you try and take that shit into canon.