User blog comment:BattleGames1/BattleGame1's Season of War Episode 7 - Vikings vs Mongols/@comment-27334870-20170914100358

Dargoo Faust's [REDACTED] EDGES: "We're the exception!"

Weapons

Sword - Tie

The viking sword lacks a range advantage, however the weapon can slash and stab in multiple directions, whereas the saber, a curved sword, is designed specifically for slashing attacks in mind, is actually going to have a hard time due to the fact that the vikings are using chain-mail armor. As mentioned before the Mongol's weapon is far better on horseback, but with its weaknesses in mind the vikings will dominate the close range if they dismount.

Backup - Mongols

Very easy edge for the Mongols whose sword is longer. As Wass said, this won't make much a difference anyways and is extremely situational.

Heavy Weapons - Tie

The Halberd and axe are far superior to any mace in both range and verstility, however the Glaide has a sleeker design better suited for the Mongol's horseback combat (Even though it is outranged by the Halberd, thanks Imperial system). I'd say that, once again, the Vikings will dominate any form of unmounted combat, however the Mongols will tear them apart with horses. Since this is highly situational, I'll leave this as a tie again.

Ranged Weapons - Mongols

While the spear is infinitely better than the lasso, the composite bow's sleeker design and superior range outclasses the longbows the Vikings use. And (surprise) the bow is also compatible with horse-riding combat, which futhers their edge over the viking warriors.

Armor - Vikings

Chain Mail > Leather. Metal > Wool. MD and Wass already said more than I need to, but I'll add the the chain mail armor gives the Vikings a rather large advantage in durability; they'll be able to tank attacks from the Mongol's swords that aren't hitting the neck. Thanking sword strikes from horseback and attacking mounts are all I can really see the Vikings do on the ground.

X- Factors

While the vikings are tough SOBs, the Mongols were able to conquer and maintain so much land for a reason. Their tactics combined with horsemanship will be able to manuever around the vikings and take out their infantry, before they tackle the viking ships lying in the river, which, after a bloody ranged battle, should end in the Mongol's favor. So I'd say that the Vikings decimate the Mongols in unmounted combat, the Mongols win with medium difficulty with horses, and win with high difficulty against the ships.

Deadliest Warrior - The Mongols