Why Is Tinubu So Powerful?

I understand he was once a Senator of the FRN and a former Governor of Lagos State. However, he isn't the only one to have occupied such positions.

Jonathan was a Governor and also a president. Yet, i don't think that he is as powerful as Tinubu. Since Johnathan left office, he rarely makes the news headline.

Ahmed Tinubu controls today's senate despite not holding any political office. This is evident by the way he unsettles the Senate President and his Vice(na Melaye say na him dey on top of their matter o).

Anyone knows the reason behind Tinubu's power?