I fully agree that the "Top 4" are gifted classical sculptors. However, the innovations achieved by 20/21st century artists are truly remarkable. Further, how could you ever hope to compare them?

Here's a bit about an upcoming retrospective of one of my favorite 20th century sculptors, Antony Gormley: http://www.thenewsroom.com/details/304344/Entertainment?c_id=kc
His work is amazing, but does it compare apples-to-apples with Bernini? Of course not!

There's no "better", no "worse", no "more", no "less". There's only art and opinion, the two most subjective things I can think of.