So Base Loki could overpower bruise and bleed Imu whose haki was confirmed >> Dr Xebec his pet dog. Garp and Roger combined could not even damage Xebec without a last resort haki mass attack which rendered them useless after.
Oda just confirmed Base Loki could defeat DR Xebec by himself.
There is zero doubt now that Hybrid Loki is far far out of reach of Roger, Garp, Whitebeard. Him soloing Roger + Garp combined almost feels like the bare minimum at this point.
It was already pretty clear that he is above those guys with the Harald feat but now all doubts have been erased with the direct comparison Gaban made with Domi Xebec's haki being inferior to this Imu.