If you want to be a decent analyst, let alone a forecaster, you need to know how to find real information. A lot of official statistics are either useless (inflation, unemployment numbers) or misleading.
Russia, with assists from Iran and North Korea and China (in non military goods, though often useful for making military goods) is out producing NATO in war material. If you just look at the GDP of NATO vs. Russia/China/Iran/NK you’d predict that couldn’t happen and you’d be wrong and like a lot of people you’d think Ukraine might or would win the war.