I am 100% certain that if you compared socialist countries today you would get the same result.
This is extremely obvious when you consider that despite obviously lower levels of development in countries like China, Cuba and Vietnam have higher life expectancy than America.
Not to mention that 21% of america is illiterate whereas literacy in socialist countries is consistently the highest in the world.
Any person doing even the most limited of critical thought about healthcare access, education and life expectancy can understand that socialist countries today would come out on top when compared to their capitalist counterparts that sit at the same level of development.
The fact that you just dismiss it with the USSR present in the data is odd. You are aware that rent in the USSR was 5% of your total income correct? I think your perspective and understanding of how people lived is not in line with reality, your confusion about this data is because you have fully bought into propaganda instead of getting a proper and measured idea about things. You are not immune to propaganda.