You might be surprised to know that the comparison is missing a critical piece - chance of imprisonment is way higher in the USA than in the USSR. The much referred by poorly understood GULAG system, at it's height, when it was literally housing Nazi prisoners of war from Germany who entered Russia, still housed less prisoners per capita than the USA does during peace time.

There's another piece missing from the comparison as well, which is how many people per capita are homeless in the USA and how many per capita were homeless in the USSR, but I can leave that as an exercise for the reader.