This is a highly speculative battle, imo. It's easier to give team 1 the victory because they have a more estabilished lore and it's difficult to backtrack Tenebrous' accomplishments in order to try extract anything meaningful from the three Sith.
Leaning towards Bane's Sith especially with powerhouses like Plagueis and Palpatine.
__________________ RealistRacism: "Sheevites, much like the Banites, were meant to increase in power with each member. From Lightsnake to Gideon to Azronger, this was supposed to be the case. However, knowledge must've been lost in some kind of Gravid-like incident, as Az turned out to be a mid-tier debater with a sub-par track record, sh!itting all over Tempest's legacy. Sad."