7 warlords of the sea doesn't mean shit. Ace was offered warlord position even before WBP and Zoro would completely body bag low diff Ace in Whitebeard's crew.
If Zoro was running solo he woulda been offered a warlord position by now easily
Named attacks mean Jack shit, Zoro's second strongest attack shown so far is nameless, Fujitora's strongest attacks were those meteors and rubbles and both nameless. Attack Fuji used on Zoro was far stronger than one he used on Sabo and even then Sabo despite being intangible with Logia was bruised and never physically overpowered Fujitora unlike Zoro.
Many people clashed with Fuji but no one was shown to be as strong as Zoro against Fuji.
Zoro low diffs Jinbei