The Jackson 5 has sold over 100 million albums worldwide. The Eisley Brothers have sold over 18 million albums. The Jackson 5 consisted of Jackie, Tito, Jermaine, Marlon and Michael. The Isley Brothers consisted of brothers O'Kelly, Rudolph. Ronald, and Vernon.
This justifies what answer for what question? Q & A: 
Was The Jackson 5 bigger family band than The Isley Brothers?
yes