Leonidas vs Khal Drogo

Leonidas, if he puts on some armor

I'm going with Drogo. 

Leonidas

Neither of them wear that much armor so that's not going to be a deciding factor here.

Round 1: Leonidas. Due to the fact he's very skilled with his standard gear (Spear/shield) and the length of his spear should be able to keep Drogo at a distance.

Round 2: Drogo. At close range Drogo looks just as fast as Leonidas and given his bigger build and upper body strength he should prove to be too brutal in close quarters for Leonidas to handle without his shield.

Round 1: Leonidas. His shield and spear combo will keep Drogo at bay and give him the win

Round 2: Drogo. His greater physical strength and surprising combat awareness and agility will give him the win over Leonidas, who seems to struggle with opponents that are his phsyical betters in close quarters

Leo wins, he seems to be the better swordsman.