User blog comment:Samurai234/Julius Caesar vs. Charlemagne/@comment-422690-20110702054422

Close range: Seax wins. It's longer and lighter, giving it a major advantage over the shorter Pugio. Edge: Charlemagne.

Mid range (swords): Joyuse wins. It has a massive reach advantage over the Gladius, as well as being made of a far-higher quality metal. Edge: Charlemagne.

Mid Range (spears): Hasta wins. The wavy edges of the Lancea may increase penetration, but missing means you also have to pull it all out again. Sure, you can use it as a javelin, but the Hasta's simplicity and power make it the right choice here. Edge: Caesar

Long Range: Draw. The Pilum is a nice javelin, but the Francisca has better armor penetration. However, the tactics used with the axe were of a closer range than the Pilum. This gives an Edge: Even.

Overall: Charlemagne wins. He has a massive gap in technology over Caesar, which is incredibly important in ancient battles - prior incident can be drawn from the Assyrians, whose iron weapons allowed them to easily conquer others who were still using bronze.