i think it's possible , with his prime version .
but the bottom line is he's likely gonna be a top tier in his prime , if we base this on the fact that the 3 other holders of 12 Supreme Grade Blades so far are clearly top tiers :
• Roger ( Ace )
• Whitebeard ( Bisento )
• Mihawk ( Yoru )
plus he's one of Imu's most important subordinates , and people who read other manga said old men aren't to be underestimated ( they could very well be strong ) .
[automerge]1638587807[/automerge]
i wouldn't be mad if he indeed turns out to be stronger than Mihawk , especially since i think Mihawk isn't fighting Zoro anyway .
and i'm not a believer of Shiryu ever being stronger than Mihawk ,
and the only potential opponents left for Zoro are Kizaru and Gandhi , and with Kizaru not being a swordsman , Gandhi has a strong chance to be a super strong swordsman , one that's at least exactly as strong as Mihawk , possibly stronger .