Heh. ES wiki, reliable. That's a good one. And you provided another instance of why it's the last place anyone goes to check lore facts. There's no record of the 12 year old girl dying. So, pick another theme on which to make your snide points, because in this one you fell in it pretty badly.
As to the OP, the Nords. Despite the redguard being talented and possessing nuclear swords, that's a magical art and not a warrior art, and isn't outweighed by some of the more fantastical exploits of the Tongues. The deciding factor is that the redguard let themselves be subjugated, and the Nords were one of those doing the subjugating. They also got their tails handed to them in the War of Bend'r Mahk and that was with Breton backup. If you need the weenie Bretons to take some land and even then you can't do it, you're hurting. Props to them for resisting the Thalmor and not backing down just because the imperials said boo.