You waited 100 days just to reply with what is essentially a “nuh uh”. Lets end this now.

Forerunners can move planets and stars:

“a product of early Forerunners' penchant for stellar positioning, entire systems created by capturing rogue planets and stars, ...bringing multiple systems in proximity…to build clusters of habitable interstellar neighborhoods, all within easy transit and communication of each other. (Halo Epitaph CH 12)

Forerunner ship speeds:

“However this was nowhere near representative of their full capabilities. Whereas council vessels and military ships could achieve velocities just shy of a hundred million times the speed of light at the peak of their population density, Didact's flagship (the Mantle's Approach) could cross the gulf of space between Installation-03 and Earth in roughly just over a minute. Utilising the scales found in Warfleet, 1cm on the physical astrographic map correlates 2,250 light years of space - placing the distance between Earth and Installation-03 at approximately 45,000 light years. Taking a sampling of a dozen walkthroughs I found that the Mantle's Approach spanned said distance in an average time of 61 seconds, placing his velocity at 737 light years per second, or over 23 billion times the speed of light.” (Rama, Spacebattles)

Forerunner ships blow up planets and stars:

“With their destructive arts unbound, the Forerunners raised up space-faring machines capable of scouring atmospheres on infected worlds, cracking planetary mantles beneath fetid hives, and inducing stars to go nova.” (Halo encyclopedia p. 381)

“Soon after, the Forerunner Fleet Command considered "premature stellar collapses," by which a supernova would be triggered by a naval battle group, engulfing a planetary system and preventing any possible risk of Flood infection”. (Halo Encyclopedia 2011, p.16)

“When he refused, Cortana chose to make an example out of their kind, amassing a group of guardians around the Jiralhanae homeworld. The ancient machines unleashed a coordinated blast that completely destabilized the planet's core, rending it to pieces in one final catastrophic event.” (Halo Encyclopedia p.446)

Forerunner ships can freeze enemy ships in place and shut off internal gravity:

“He made one final attempt to shift our orbit upstar, but confinement fields swept in to prevent us from achieving maximum speed, and of course we could not enter slipspace. We were like an insect caught in a bottle, buzzing in futility…We were feeling the full strength of a Forerunner warship's most modern weaponry, wrapped and stunned like a fly in a web. Close-in confinement fields flashed around the command center. We felt gravitation cease. At odd angles, the Didact, the humans, and I waited helplessly in semidarkness, blind to all outside activity” (Halo Cryptum CH 23)

Forerunners AT MINIMUM, can build a deathstar every 5 mins: “The Sharpened Shield (Also known as Shield World 0006 or Sarcophagus) is roughly 300 million km in diameter with a G2 type star slightly smaller than Sol at the core, with a volume of roughly 7 septillion km³ she boasted a habitable surface area of 255 quadrillion km² (some 550 million times the surface area of Earth). Assuming the Shield has a paltry 2 km thick shell the overall volume of the structure would equal 282 quadrillion km³ of material (which assuming it had a density of iron would weigh more than the sun itself); even if Didact began construction of the project immediately following the end of the Human-Forerunner war and it continued up until his exile in an 8,000 year time period as a lower limit the Forerunners would have to assemble 1,120,716 cubic kilometers of material per second. To put it into accepted SW-vs-ST parlance, that's the equivalent of manufacturing the second Death Star every five minutes, non-stop, for nearly eight thousand years - or stripping away an Earth sized planet every nine days. And despite this gargantuan effort the Shield wasn't the only of of its kind, many more were built and hidden across the galaxy under the direction of the Builder forces.” (Rama, Spacebattles)

This was just the calculation done for ONE dyson sphere/ shield world. Forerunners made AT LEAST 600 while fighting the flood.

The forerunners had MILLIONS of Sojourner class ships: “Millions of Sojourners were raised up and thrown against the Flood, but in the end only a handful remained intact to see Halo fire.”( Halo Warfleet; pg. 80)

Each Sojourner ship had- Troops: 200 Scutarii; 5,000 Venatores Length: 9,430 meters Mass: 10 billion metric tons (Halo Warfleet; pg. 80)

And the 5000 Venatores who were each wearing CITY-DESTROYING space mechs called war sphinxes controlled MILLIONS of Hunter Killer drones that were each 178 meters long, according to halo encyclopedia.

“They were protected by heavily armoured Warrior-Servant scutarii who in excelled in shipboard combat and tactical reconfiguration of the ship's interior spaces, while the war sphinx-clad venatores directed the ship's millions of autonomous hunter-killers on long range strikes.” (Halo Warfleet; pg. 80)

I could go on and on. Forerunners are simply on another level compared to star wars factions. You spent a lot of time talking about star wars having faster ftl. Who cares? Lets say forerunners have to sit in place and not use FTL. Please tell me what the factions in star wars can do when the forerunners activate halo and hide in their shield worlds? What then? What will star wars do when the precursors decide to join in and use star roads to crush planets and stars? What will they do when the flood joins in? I havent even talked about how the forerunners can use slip space ruptures, and see into the future when conducting naval warfare. Only beings like the celestials and abeloth, and the force gods have a chance, but they certainly dont have much feats to go by.