I've never encountered those "spearman beats tank" incidents. The closest I came was an absolutely epic battle where a massive Aztec army consisting of longbowmen, macemen, musketeers, Jaguar warriors, and catapults fought my smaller American army of modern infantry and one tank. They did take out the tank, but they had overwhelming numeric superiority, and they still lost the battle. I explained that one as their troops literally swarming over my tanks, prying open the hatches, and killing the troops inside.
That game was actually my first ever LP, and it was a good example of how fun alternate history can be. It was using the 18Civs map, which tries to reproduce the real world as closely as possible. A few tidbits:
- The United States of America is by far the largest nation on Earth, including the entirety of North America (having gained the Southwest and Central America in the war with the Aztecs), Cuba, Iceland, New Zealand, and southeast Australia (northern Australia belongs to the Indians).
- The American capital is New York (Washington DC never existed). It does have a familiar landmark - the Statue of Liberty, a grand symbol of American prosperity and openness. Or, if you're from Boston, it's a lame ripoff of the Boston Colossus, which was built a few thousand years earlier.
- Broadway is in Seattle, and Hollywood is in Melbourne, Australia.
- The most popular religion in America is Judaism, founded in Denver.