They might, I still rank Killer above them.
All comes down to Oda- he chose to include Killer here. Could have left him out like Sanji, Jinbei, Bepo or the other Supernovas. Could have chose to have all the Supernovas join in at the same time.
Instead, we have a hugely important double spread where Yamato talks about how the future leaders of pirates will take down Kaido, and Killer is in the company of the future Pirate King, the future World’s Strongest Swordsman, and the two captains in Kid and Law.