Why was the poverty rate five times higher in the USSR than the United States, then, if it worked so wonderfully?

Poverty in the form of lacking basic needs had DISAPPEARED, though many jobs couldn’t supply a large amount of wants, their quality of life was high for a long time. What we call poverty is different than theirs, they had the same levels we did in the early 1900s for a long time due to their isolation from global markets, but what the UN would consider poverty didn’t EXIST in that nation. It was far from perfect, but the USSR was a hardy nation that teaches the world a lot about what’s possible, despite its revolting flaws.