50 years the top 100 singles from Billboard Hot 100
http://www.billboard.com/bbcom/specials/hot100/charts/top100-titles-00.shtml
Crossroads isn't even on the list.
Nor is it on the list for Billboard Hot 100 R&B/Hip-Hop
http://www.billboard.com/bbcom/specials/hot100/charts/top-rbhiphop.shtml
Based upon sales alone the following all rank above crossroads:
Over 11 million copies
"Candle in the Wind 1997/Something About the Way You Look Tonight", Elton John
Over 8 million copies
"We Are the World", USA for Africa [1]
Over 4 million copies: in alphabetical order
"Another One Bites the Dust", Queen
"(Everything I Do) I Do It for You", Bryan Adams
"Hey Jude", The Beatles
"Hound Dog"/"Don't Be Cruel", Elvis Presley
"I Will Always Love You", Whitney Houston
"Macarena (Bayside Boys Mix)", Los Del Rio
"Whoomp! (There It Is)", Tag Team
[edit] Over 3 million copies: in alphabetical order
"Apologize", Timbaland presents OneRepublic
"Billie Jean ", Michael Jackson
"Crank That (Soulja Boy)", Soulja Boy
"Don't Matter", Akon
"Eye of the Tiger", Survivor
"Gangsta's Paradise", Coolio feat. L.V.
"How Do I Live", LeAnn Rimes
"Beautiful, Christina Aguilera
"I'll Be Missing You", Puff Daddy & Faith Evans feat. 112
"Irreplaceable", Beyoncé
"It's Not Over", Daughtry
"Love Me Tender/Any Way You Want Me", Elvis Presley
"Low", Flo Rida feat. T-Pain
"SexyBack", Justin Timberlake
"Bleeding Love", Leona Lewis