Going with what this guy said.Kimimmaro, Mangetsu, Darui, and Konan (Debatable) Can Solo most people in that list.
Hiashi is nothing special man, just seems like a Neji clone. If he were that strong he'd be the general of the beach battlefront but he contributed like nothing to that battlefield. If he were Kakashi/Zabuza/Darui level they'd have sweeped that with Chouji/Chouza in like half a day.Why is Hiashi held in such high regard?
Hiashi has Byakugon, gentle fist, and 64 palms
Zabuza has Hidden Mist, Silent Killing, Water Clones, and Water Prison
Hiashi has Rotation and Vacuum Palm
Zabuza has Water Dragon and Giant Vortex Jutsu
Zabuza also is more skilled with Genjutsu according to the data books and has greater physical strength
They are about on the same level
Hiashi is nothing special man, just seems like a Neji clone. If he were that strong he'd be the general of the beach battlefront but he contributed like nothing to that battlefield. If he were Kakashi/Zabuza/Darui level they'd have sweeped that with Chouji/Chouza in like half a day.
That said he does seem like a bad matchup against Zabuza simply because of the air style and Byakugan making the mist (Zabuza's greatest power) meaningless.
It's an unfortunate matchup there but as a whole Hiashi is not on the Kitsuchi/KabutoPTS/KakashiPTS/Darui/Zabby level.