[quote]Who would win in a fight? This is before the Fall of the Jedi. This is before the Guardians fought Crota at Mare Imbrium. This is before the Horus event. The Space Marines are at their full power with all of their leaders alive.[/quote] In-Game? [b]Randall, the Vandal[/b] Lorewise? Difficult one. Although the Jedi and Sith can be extremely powerful (especially in EU), dead is dead. They don't revive (Darth Plagueis is probably an exception), or at least not at the rate of Vanguard Guardians. Also, they don't have gods like the others do. I'd rate Sith over Jedi, since the only way to slay Vanguard Guardians seems to be by pure Darkness or by reconfiguring timelines, both not (yet?) mastered by the Jedi. And remember, the Sith are only with two since Darth Bane decided so, so you can argue at that. Next are Vanguard Guardians. Pretty simple, they do have a lot of power, but are easily defeated. Lots of Guardians already died, and they may have space magic, they are definitely not almighty. It will be a close call between the Sith and Guardians. Then we have non-Vanguard Guardians, like Dredgen Yor. They seem to have more power, but also don't have their ghosts, so again, dead is dead. They can't revive. Also, they don't have the support/supervision of the Vanguard, but that can be seen as a good thing. I'd like to add Destiny gods. The Worms, or maybe Leviathan, for example. They are both the most (or next to most) powerful of all this creatures. But. They are easily slain. Leviathan is asleep for many years now, not doing much. And the Worms fade by their own logic, the sword logic. The Vex seem to have trouble already, and as seen at future Vex units, they don't seem to improve. I'm not that familiar with Warhammer: 40K lore, but from what I've read here and in other posts, I can conclude that they are genetically modified super-units, who are capable of killing powerful Demons(?). But they are not able to revive themselves, which makes them weaker of course. UNSC Spartans are the same story, but less. I don't know that much about the others, never played Warframe (yes, I regret that), so I can't really make a decent opinion about that. [b]So this is my ranking: 1. Sith 2. Space Marines 3. Vanguard Guardians 4. Non-Vanguard Guardians 5. Jedi 6. Destiny Gods 7. UNSC Spartans [/b] Thanks for reading.