It's a decent guess for now. I will keep going back to the fact that Oda had Jinbe shatter the floor.
That and Inu obviously has no shot at beating Jack for the following reasons.
1. Inu was shown to only be at best equal to Base/Beast Jack. Hybrid Jack mid diffs Base Inu, and Inu won’t be able to use Sulong
2. Oda would have Neko helping Inu if he wanted the Minks to KO him since both have the same grudge against him
3. Inu would be achieving much more than any of the other Scabbards are achieving if he beats a Calamity, so it won’t happen
4. Only SHs will beat BP officers. Luffy beats Kaido. Zoro beats King. Sanji beats Queen. Jinbe/Brook beat WsW. Robin beats Maria. Franky beats Sasaki. Nami beats Ulti. Usopp beats P1 (hopefully he gets back up). Inu beating Jack would be extremely out of place
5. Inu is a trash side character that nobody actually cares about and isn’t that important to the narrative, so it makes no sense for him to do something as important as beat a guy ranked equally with Zoro and Sanji’s opponents