Darth Bane was killed by his apprentice, Darth Zannah, while dueling.

The miner Darth Bane fought with was named Gerd.

That would have to be Darth Bane since he is one of the top 100 Star Wars characters

Darth Bane is about 5,000 years older than Darth Vader, Darth Sidious' apprentice. Darth Plageuis is close to being as young a Sith as Vader. So, Darth Bane, the first sith in thousands of years in his time to have the "Darth"-title, is thousands of years older than Plageuis.

Darth Bane is obviously more powerful. He obtained almost all Sith-Holocrons and created the "Rule of Two". Besides, Darth Bane started as a Sith and died a Sith. Krayt started as a Jedi.