A person with AIDS could harbor the virus for years without ever showing symptoms, and is contagious during that time. Thus AIDS was able to spread widely, especially in Africa (where there are 35 million or so cases).
Ebola is only similar to AIDS in that it needs direct contact with infected fluids to spread, and that the virus is fragile outside of the body.
Ebola is only similar to AIDS in that it needs direct contact with infected fluids to spread, and that the virus is fragile outside of the body.