Board Thread:Warhammer 40k General Discussion/@comment-46.162.84.254-20130704080553/@comment-6078851-20140705140747

if orks had an imperium-esque military heirarchy then  i'd put them in the top 2 (at the very least 2nd but possibly 1st), but since they lack such cohesion amongst themselves then they wouldn't be more than a galactic nuisance if it wasn't for their numbers which makes them a viable threat to everyone. i like orks a lot but i think 5th is where they should be.

the necrons have the most advanced technology in the galaxy, by a long way, but while they have numbers most of them are still 'asleep' awaiting their awakening protocols (and many of them will never awaken due to the degredation/malfunctions many tomb-worlds have suffered). plus they have wars amongst themselves so they aren't totally united.

tyranids on the other hand have uncountable numbers already but the vast bulk of them are still in their inter-galactic hibernation which are in the process of 'waking', which will make their uncountable numbers even more uncountable :P. as for their technology, while it's biological in nature, i consider it just as advanced (but in a completely different manner) as necron tech because it's a technology that no-one understands how it works and so can't retro-engineer it (just like necron tech). plus no race is as united as the tyranids under the hive-mind.

if the necrons were fully awake, and united, then i don't know who would be more powerful a faction (i would probably say they would share 1st place), but i think necrons would be the best suited to effectively combat tyranids due to their technology and because necrons have no psychic-ness for the suffocating 'shadow in the warp' to have an effect on.

but, as always, this is just my opinion :)