even if Zoro cut Kaido by end of Wano ... he still is not Oden level ... (same level of CoA)
Oden have best endurance for a human so far even well far above whitebeard himself (at least MF beard)
Oden have a massive physical power maybe above all normal human but for sure above Zoro as of now
Oden body have fast amazing healing capability beyond human power
Oden have a experience well far above any straw hat
so yes ... while Oden is well comarable to admirals ...
Zoro by end of Wano and having same level of CoA as Oden himself .... at BEST CASE he is Old Ray level .... still really good