China:

• Reuters, 2018: China overtakes U.S. for healthy lifespan: WHO data
• United Nations, 2019: Helping 800 Million People Escape Poverty Was Greatest Such Effort in History, Says Secretary-General, on Seventieth Anniversary of China’s Founding

US:

• World Incarceration Rates If Every U.S. State Were A Country
• List of Atrocities committed by US authorities
• A Detailed Chronological List of US Interventions, Invasions, Destabilzations, and Assistance to Oppressive Regimes (ending in 2002)
• The U.S. Did Not Defeat Fascism in WWII, It Discretely Internationalized It
• Shock therapy (economics)
• Are We The Baddies?
• The blueprint of regime change operations How regime change happens in the 21st century with your consent
• Infographic: US military presence around the world The US controls about 750 bases in at least 80 countries worldwide and spends more on its military than the next 10 countries combined.
• Michael Parenti: Africa is Rich

I would say that the country that has built 45,000km+ of high speed rail network, has a home ownership rate of 90%+, and has virtually eradicated extreme poverty within it's borders is objectively better than the country with one of the highest per-capita prison populations in the world, and ~600k homeless people it can't take care of.