Tier List: Combatants
This is for Legends combatants, based on their general ability in a one vs. one match-up with a 15 or so meter starting distance.
New lines that aren't run-ons delineate gaps; other than that, no ordering within a tier.
Mortis tier:
The Father, Mortakin
The Daughter, The Son
Full power Abeloth
(big gap)
Entity tier:
Zonoma Sekot, FotJ Abeloth
Oneness tier:
Oneness Jacen
Oneness/super-saiyan Luke
Luke tier:
post-pool Soresu Taalon, DN-FotJ Luke
TUF Luke
Lord Nyax (amp)
Star by Star Luke
DE Sidious, Vector Prime (beginning of NJO) Luke
Yoda tier:
Black Fleet Crisis Luke, RotJ Sidious, Zonakin
RotS Sidious, Yoda
TPM Sidious (post-Plagueis death)
(modest gap)
Plagueis, Valkorion
SWTOR Vitiate
Vader tier:
novel Vitiate, Darth Caedus, Darth Krayt, Darth Tenebrous, DE Luke
RotJ Vader, Exar Kun, SoR Revan, Anakin Skywalker
Revan Reborn, Galen Marek, Jacen Solo, Kyp Durron
KotOR Revan
Dooku tier:
Freedon Nadd, Mace Windu
Dooku, Naga Sadow, Arcann, Darth Revan, RotJ Luke
TCW Anakin, Darth Malak, Shaak Ti
Jaina Solo
Obi Wan tier:
HoT, Darth Malak, Darth Jadus
Obi Wan, Darth Maul
Barsen'thor, Darth Bane, Kyle Katarn
Darth Zannah, Satele Shan
B-team tier:
Kit Fisto, TPM Maul, Ventress, Grievous, ESB Luke
Darth Thanaton, Agen Kolar, Qui Gon, Scourge, AotC Anakin
PoD Bane
Kas'im, Rastka Lsu
Council tier:
Ki-adi Mundi
Lord Hoth, TPM Obi Wan
Aayla Secura, Tahiri Veila
Brotherhood tier:
Kaan
Qordis, Kopecz
Tionne
Sirak tier:
Average PT era Jedi master, novel Scourge
Sirak
This is tentative, of course. The Vader-Dooku tiers are relatively close together, as are Obi Wan and B-team.
What do you people think?