They make such assertions through flippancy. They perhaps fail to read the FAQ, fail to read about the game, consider themselves good at vanilla, and ignore the challenge ratings factions have. They boot up the Parthians or whatever else, expecting to steamroll, but they start in a bewildering amount of debt in what is a very tough position. Everything is more expensive, and they declare it impossible. I remember once in vanilla I tried Dacia and gave up because I thought it was too hard. I remind myself of that whenever I need a RTW-related laugh, as I now shoulder much more difficult circumstance and much bigger debts with ease. I play on H/M: VH is just cheap, IMO.