Just watched this episode on one of those nifty online video platforms, and I've got a rant.
Okay. Let's start with the viking. He didn't even have a great axe, it's more of a pole axe, the shaft's so fucking long. Even though he hit the samurai bastard with his spear, it just kinda bounces off the cheapo leather armor. LEATHER ARMOR IS FOR ELFS. Also, it tends to be pierced by long, pointy, sharp objects. Which a spear has, mounted on a shaft. But let's continue. The viking has mail. Mail is there to deflect and stop almost any slashing weapon. However, the bloody samurai's melee weapons are almost only slashing (the katana, the pole-sword thingy).
The arrogant samurai asshole speaks so highly of their elegance, and they come with a frickin' studded club. You could as well cut off a branch. Also, it is mainly viewn in mythology. So, let's play mythology and get Mjölnir... not counting how heavy the damn thing is. The piece o' wood used in the show is 35 pounds. What the hell are you going to do when you miss? The elf armor is not going to protect you.
But the whole show is dubious anyways. Typical D&D knowledge, as is shown by the viking 'long sword'. For other D&D historicians reading this, a long sword is long, so long in fact that it must be swung with both hands. If it's lighter, it's either a bastard sword or a short sword.
In the end, all I want to say: Viking should've won, the show is fun but takes a huge shit on realism.