Board Thread:Warhammer 40k General Discussion/@comment-99.166.166.141-20160119010152/@comment-26420219-20160121220030

Well it seems pretty obvious that Star Trek-universe would almost be instantly crushed: no standing military apart from fleet, outgunned warships and no Space Marine equivalent troops. Halo-universe would probably be next. Spartans would put up a nice fight,but ultimately their super-weapons are only the Halos and as shown by the games they take a hell of lot of time to charge and a pretty easy to destroy, but with their more battle-hardened society they would probably survive longer than the Star Trek universe. The Star Wars universe would probably be a rough equivalent to the Halo-verse, even though they do lack a decent Titan.

I guess if the Reapers threw in their lot with the unified civilisations of the galaxy, Mass Effect could put up a nice fight (Personnally I like the idea of slingshotting a Reaper with a Mass Relay at some unsuspecting target), but let’s face it, in fact of scales W40k is pretty much unbeatable with its Legions of Space Marines, Titan-class war engines, numerous battlefleets and star/planet-killer weaponry. And if that would not be enough you’d still have to vanquish the hordes of the Orks and Tyranids, the uncounted Legions of the Necrons and daemons, And even if you passed that level, you would still have to fight the awakened Necron Gods that eats an entire sun for breakfast.

Other universes would automatically loose because they lack god-like beings that could fight on that level. W40k has the Emperor, the Chaos Gods, C’tans, Eldar Gods (at their peak as per your opening criteria). So case closed.