Bane lost to 20 good mercenaries and Force Sensitive untrained Iktotchi that suppressed his Force connection, that's pretty different comparing to fighting 4 persons.
On the other hand, Cognus dared to engage him in close combat, which should be a complete suicide if Bane was good enough.
Now, what do we have here?
Cipher 9, being of such reflexes and inhuman capabilities that she survived Jadus going after him/her before Jadus could obliterate her with absurdly incredible Force power (or just lightsaber combat).
Champion of the Great Hunt. The guy who could shoot Jedi from surprise dropped on the ground, who could defeat the Jedi Battlemaster dwarving the guy who already defeated 100 Mandalorians on his own.
Yet we have two other people here. The team should stomp.