[loso]

It wasn't all marketing. Not even mostly marketing. When the group was still young but in the industry all of the industry execs pushed for Jermaine Jackson to go solo. He considered the cute one by girls and was considered to have just as much talent as Michael. Or at least close to it. While he had a decent solo career it was nothing like when Michael got older and went solo.

Basically Jermaine was heavily marketed when he went solo and even had a bidding war for his services. But it was MJ who was the star and for lack of a better term had the "it" factor.

[thewarrior]

Jermaine could maybe sing as well as Michael but could he dance like him ?

Michael was in another league altogether. Even Quincy Jones says about Michael , "Sometimes the hand of god just lingers a bit longer over someones head".