Who is more Christian Russia or U.S?

20 years down the road, Russia will be more Christian. 

Russia is a Eastern Orthodox Christian with Muslim alliance. While U.S is mostly Protestant Christian with a Catholics and Jews. 

Russia overall.

but there are some minorities in the US such as the Amish, Mennonites and Russian Old Believers. 

Putin: Christianity is the Foundation of Russian Nationhood and Cultural Identity
28 Jul 2018

MOSCOW (AP) – Vladimir Putin says the adoption of Christianity more than 1,000 years ago in territory that later became Russia marked the starting point for forming the Russian nation itself.

President Putin’s comments came Saturday in a ceremony marking the 1,030th anniversary of the adoption by Christianity by Prince Vladimir, the leader of Kievan Rus, a loose federation of Slavic tribes that preceded the Russian state.

Speaking to thousands of clergy and believers at a huge statue of the prince outside the Kremlin, Putin said adopting Christianity was “the starting point for the formation and development of Russian statehood, the true spiritual birth of our ancestors, the determination of their identity. Identity, the flowering of national culture and education.

Orthodox believers and priests attend a ceremony marking the 1030th anniversary of the adoption of Christianity by Prince Vladimir, the leader of Kievan Rus, a loose federation of Slavic tribes that preceded the Russian state, in Moscow on July 28, 2018.

Russian President Vladimir Putin (centre L) and Orthodox Patriarch Kirill (centre R) attend a ceremony marking the 1030th anniversary of the adoption of Christianity by Prince Vladimir, the leader of Kievan Rus, a loose federation of Slavic tribes that preceded the Russian state, in Moscow on July 28, 2018. (ALEXANDER ZEMLIANICHENKO/AFP/Getty Images)