Stevie Wonder was the number one Billboard hot 100 Artist of the 70s and he has 10 Number ones. Michael Jackson was named the number one Billboard hot 100 Artist of the 80s and he has 13 Number ones. Usher was named the number one Billboard hot 100 Artist of the 00s and he has 9 Number ones. All three has more timely classics while releasing less songs. Quality over quantity. Chris Brown has only two number ones and he haven't had a number one since 2007 and all he does release 30 damn forgettable songs every year.