- Record sales: Frank Sinatra sold over 150 million records worldwide, while Black Sabbath has sold over 75 million records worldwide.
- Chart success: Sinatra had multiple number-one singles on the Billboard Hot 100 chart, while Black Sabbath had several top 10 hits.
- Awards: Sinatra won 11 Grammy Awards, including the Lifetime Achievement Award, while Black Sabbath won two Grammy Awards.
- Cultural impact: Sinatra was one of the most influential singers of the 20th century, and his music continues to be popular today. Black Sabbath is considered one of the pioneers of heavy metal music, and their influence can be heard in many modern rock bands.
Based on these metrics, it seems that Frank Sinatra was more popular overall. However, both artists were highly influential and successful in their own right.