Let's say that this is the Hive at the height of their power, and the Flood at the height of their power. The first problem is that the Hive have no known biological systems. So let's say that the Flood could infect their Worms. First, the worm's paracausality might render them immune, and second, the worm might be able to consume the infection as it would a tithe. Second, the infection would end a Hive's Sword Logic, and the worm would consume the Hive before anything else could be infected. But even if a Flood infection could take root in a Hive, it wouldn't be able to do anything because the Hive is not alive in our sense of the word. Rather, they exist. Now for weaponry. The Flood rarely use actual weapons, preferring instead to infect their enemies. As this is not possible with the Hive, they must turn to extermination methods. There is no doubt that the Hive have superior ranged weaponry. At close range, the tables would be slightly in favor of the Flood, if both sides had equal numbers. A Hive Ogre could sweep a swarm of Flood, but if they could get into close range, they would thrash it. Another thing is one-on-one matches. A Hive Ogre could easily melt down an Abomination's defenses enough to kill it in melee combat, if not kill it before they meet. Plus, both sides work in swarms, so the Hive could pick off or weaken the Flood swarm before the Flood can actually attack. So, the Hive clearly are better on land, but doesn't the Flood have a super powerful navy? Yes, they do have the capability to infect entire planets. But even if Flood growths cover Oryx's entire Dreadnaught, they will be annihilated once he activates the superweapon. And even if you say that the Dreadnaught isn't that big, or that it can't even move, let me remind you that the Dreadnaught is the size of Earth's moon, and that it can move faster than light due to its reality-warping properties. Oh, but the Dantalion Exodus IV smashed a hole into its hull. That is true. But the Hive let the Cabal on board to sharpen themselves, and the Dantalion Exodus IV actually didn't cause much damage. Remember, the Dreadnaught is the size of the Moon, and the attacking Cabal went into the Trenchway (meaning that they didn't smash through the hull, just fit into a slot), and they just crashed through a few walls inside. Much of the wreckage is just form the Dantalion. But Cabal warships travel at incredible speeds if they choose to, and nothing the Flood have can even come close to that. And all this isn't even mentioning Oryx, Crota, the Deathsingers, Omnigul, or the Court of Oryx, along with Savathun, Xivu Arath, or any other of his countless generals, the Worm Gods, or the war moons. And I've proven that the Hive would beat the Flood with ease without even mentioning how Oryx could Take them all!

Who would win. A group of darkness worshipers that have ungodly amounts of power. Or one popcorn Boi.

No question flood win, hive can’t even take last human city but flood are so dangerous that it came to the point where whole galaxies were wiped out to stop them. A single flood spore can doom a planet can you say the same of a single hive?

The Flood is that even a -blam!-ing question? Anybody who knows both the Halo lore and the Destiny lore all the way through will tell you Flood. The Hive have very obvious and exploitable limits, the only limit the Flood have is running out of things to infect but because they can do it so fast and so easily that it results in a necessary genocide of the whole galaxy. I think a force that poses a galactic threat of that scale is going to beat anything from Destiny with relative ease aside from maybe the Vex. The Flood could still shred the Vex though, logic plague. Honestly it would probably be worse for them considering radialoria is an organic compound.

Can the flood traveler between realities and then rewrite existence using stone tablets? Yeah I think Oryx could take them on single handedly, just imagine the taken version of the Gravemind

The Floods goal is to consumes the whole universe, A single spore can destroy a species as Shipmaster said in Halo 3

Can the flood be Taken? If not then Flood. If so then Hive. And current state of the Hive or at their prime?

Neither. They form a symbiotic relationship.

All Hive have to do is have Flood turn into Taken and BAM!!! Hive now also command Flood just like Taken Fallen , Taken Vex and Taken Cabal Then have Taken Flood deal with Regular Flood

Depends on what stage of Flood are on, I'd say anything lower than Interstellar stage would be defeated by the Hive's gods, but if the Hive as they are now were to face the flood as they were in Halo 3, it would be a battle of the two most cunning minds of the universe, The Gravemind vs Savathun, I'd think Gravemind would try to implant the Logic Plague into Savathun so that he could time his victory and take over the Hive. But something says that the Taken would try to mess with High Charity...

Idk, I like the flood, they’re just the cooler version of the Hive. [spoiler]Daniel. The cooler Daniel[/spoiler]

Flood because they could infect a single hive and learn how they work, and they could learn to take if they did something like infect whoever the current leader of the Taken is, which would pretty quickly turn into either a proto-gravemind or a full gravemind.

I’d have to say the hive as death is sacred to them so while a normal person might see it as defeat for the hive they see it as ascension