Forerunners have the capabilities to manipulate matter and gravity being able to destroy planets and creating them with their hands. Precursors are the gods that created life and are able to destroy and create as they please. The precursors eventually became the flood, an infection that will never stop and destroyed and took over all life in the galaxy. They can also infect ais and other non living forms such as robots. They share one mind and learn and have any ability of whatever they infect. The Spartans are on even ground with guardians but I see Spartans winning because of all of their advantages over guardians. Yes I know guardians have magic but non of their abilities can break their armor unless they get ganged up on in which Spartans always travel in 4-6 Spartan Fireteams along with comms support meaning they can call in more Spartans if they feel overwhelmed. Both the UNSC and Covenant are in possession of weapons of mass destruction such as planet destroying nukes, excavation beams, and mac cannons. Sorry dude. I like destiny and know probably more about the lore than you do since I've done my fair share of research in it. I actually like destiny but man halo does decimate destiny.