The first example sounds like that because it's a European model of choral singing that no longer exists in the US save for 3 places: the Choir of Men and Boys.
The men are all classically trained singers, often operatically trained. So their sound is very free and full of vigor, because that's how they were taught to sing; opera has no microphones, so you must tell a story over a loud orchestra. The boy trebles singing largely come from the parish school and they get daily instruction.
It mostly doesn't exist anymore in the United States because you have mixed choirs in the Church, and so less demand, which means less tuition and schools closing.