So wich realm would be the most powerfull? Im not talking about most powerful god/hero, but most powerful by units, magic, weapons and anything that an army of TES would need to win a battle.
I didn't include the Nine Divines since they seem to be able to kick but anytime (Lorkhan, Mehrunes Dagon).
Didn't include some of the daedric princes since most of the seems not to have anything but dust, cold and emptyness.
From what we've seen, I'd have to say Mehrunes Dagon's forces. Despite the fact that the Oblivion Crisis was ended, his forces were very powerful. They're not only immortal, but apparently more technologically and magically advanced than the current mortal civilizations, as their Siege Crawlers, Sigil Towers, and Daedric equipment demonstrate. They just had some trouble invading Tamriel. Or they rather may have been biding their time until Mehrunes Dagon could enter Tamriel.
Voted Tamriel, As much as I prefer the other choices I have to be honest and say there is a reason why The Empire rules most of Tamriel, and is still around to do so.
I voted for Tamriel, only because they survived so long in Nirn, and have so many races. Why would anyone vote dor the Deadra, Did't TES4 show anybody anything???
It's either the Empire or the Ka Po'tun. The Empire has had a long run as a dominant force, however, the rising tiger(-dragon)s of the east might be able to rival them soon.
the only faction/realm that would pose a major threat besides the dadrea would be the Akaviar or whatever the one's from the other continent which have Asian influence