carthage
PLEASE PROTECT ME STONES
Malgus is vastly more powerful and skilled than Bane
Malgus has telekinetically blown away the rubble of two buildings, ragdolled/telekinetically dominated the strike team he fought (Hero/Barsen/Nox/Wrath), lifted a boulder that blocked a mountain path, impacted a ship high in the air with a force wave, telekinetically force grasped Zeerid's shuttle as it lifted off, ragdolled Jedi, brought down a pillar with force scream, blown up Republic interceptor ships with force scream, shaken an entire manse with force scream rattled transparisteel with force scream, , and ragdolled Jedi, Malgus needed no nexus for these feats unlike Bane.
Bane has thrown a table hard enough to break it, killed men with a couch, telekinetically disrupted the organs of guards, killed guards with tk, broken a Sith lord's spine, thrown guards against walls, levitated a girl, broken a girls spine, and broken boxes and tents on Ruusan. Bane is nowhere near as powerful as Malgus as Bane's best "feats" take place on nexuses and he was amped when he performed then
Malgus is a better duelist than Bane. Bane has only beaten Fohargh and Sirak (after losing the first time) and fought evenly with Zannah (who has only beaten a featless half trained Jedi Knight). He was amped by Orbalisks/a nexus when he beat the Tython strike team, and he didn't beat them by virtue of his own skill. Bane has never beaten anyone by virtue of his own skill apart from featless trainees.
Malgus has beaten Ven Zallow, Kao Cen Darach, beaten Satele Shan twice, beaten a Zabrak Jedi master that toppled two buildings on him, beaten Lord Adraas, beaten Aryn Leneer twice, and dominated the strike team sent to fight him before going down. Bane is nowhere near the same tier as Malgus as a duelist.
Exar Kun, Darth Traya, Darth Maul, Savage Opress, Darth Krayt, Darth Malgus, Lumiya, Ulic Qel Droma, Wrath, Nox, Vader, and Dooku are all above Bane.
Malak might be above Bane too, I'm not sure.