wh40k vs halo (yes I know this has been done)

Please note I didn't list ALL the races of Wh40k. The marines in halo are easily outnumbered by imperial guard by terms of numbers and firepower. The average imperial gaurds men is equipped with a laser rifle. As of which can easily zap off limbs and cause meter thick wholes in concrete. As for numbers, the imperium of man controls around a million world, many of which contains hundreds of billions of citizens. Titan legions: warhound titan sits 14 meters (45 feet tall) imperial reaver titan sits at 75 feet tall. A warlord titan sits at 182 feet tall. (i must apologize if i listed this wrong on my previous arguement) the imperator titan sits at 166 feet and is by the most powerful titan ever concieved. As for spartans. Space marines have nearly bullet proof bones by todays standards which are similar to halo's. Space marines cannot bleed to death as instant caurterizaton occurs. They have an organ called tge black carapace which totally syncs thembin with their own power armor. It even syncs the users organs with armor to basically create a extension of the body in the armor. The helmet of power armor contains "auto senses" which contain range finders, target reticules, thought activated comm-augers and audio filters. The helmet also contains photolenses. This protects the user from any dazzling lights, in low light conditions and allows them to see in different light wavelengths. A respirator vox grill which can amplify a space marines battle cry to deafening levels and it also has a toxin filter. The armor also has its own nutrient resevoir which allows the space marine to not eat or drink during battle. I may not mention this race at first but this one can easily counter the covenant. (No not tau). Orks. A race of beings litterally created for nothing but War. Their combined physic energies can make anything they believe true. For example: most of their technology is made from ram shackle scrap metal and various parts. Many a techmarine has opened a ork shoota to discover a few bolts inside. A regular ork's strength sits between a brute and hunter. Orks do not reproduce like other species as they reproduce litterally by dying. When they die they release many spores upon death. Its easy to say that when you kill a ork, 15 more takes its place. When orpro infestation is large enough. They can replace the ecosystem with their own. The spores breed certain types of orkoid species depending on how many orks present. 1st gretchin, snotlings and squigs grow. Gretchin and snotlings usually build the infrastructure. 2nd orks begin to grow and be birthed. This forms a tribe and their technology level depends on what's nearby. A jungle would make them feral. A city such as High charity would make em' ready fo da lootin'! (Pardon the ork speech). Some of the most popular features of an ork are the ork waaaaaaaaagggghhhs and, the ability to loot everything and anything and repurpose it (high charity, covenant ships, armor and even scarabs and hunters). Ork waaghs are when a huge amount of orks gather under leadership of warboss. An ork's waaagh can number in the millions or in the case of "the beast " possibly trillions. Orks contain the inherent ability to create technology via genetic coding. The halo rings wouldn't completely destroy the orks as when they die they release spores. And there are many more if them in other galaxies. Flood couldn't infect them as they are a symbiotic combination of fungus and animal organisms (the head being the only animal part). The covenant couldn't handle a small amount of humans with inferior firepower. They would be able to handle trillions of individuals completely bred for nothing but war. Tyranids have destroyed possible thousands of galaxies and countless species. They have their own ships and technology, when they feast upon an planet. They strip of ALL biological components including atmosphere. They can adapt to any and all situations. The only species that can ever stand up to them are orks and necrons. Flood could not infect them. Initially they maybe could but the tyranids are to adaptable and would become immune. As the tyranids goal is to consume biologucal matter and DNA. Tyranids are governed by a Hive mind which encompasses the countless trillions in the universe. Halo rings would not effect them because there is MUCH more outside the galaxy. Protheans. Necrons are souless contructs created in a substance called necrodermis. Necrodermis is "living metal" a highly resistant metal that rejuvenates on its own. Necrons live underneathe "tomb worlds" worlds which houses millions of these individuals. Necrons can never be destroyed as they alsways put themselves back together or phase back underneathe their world to regenerate. All necrons typically use a gauss weapon. Necron ships are capable of instant travel. And they posess a installation called the "celestial orrery" which is capable of destroying any and all solar systems at will.