I choose to accept the information advanced by the FBI, legal documents, public testimony, informants, and so forth, rather than an anonymous internet poster who claims to have some relations, then others.

The FBI had the Outfit wired and bugged (Little Al, Shade, Plumb). They heard discussions that the Outfit thought were private and confidential. The FBI, and Roemer, had no reason or agenda to assert anything other than the truth about leadership positions.

As noted above, the Outfit did not (and does not) follow the traditional hierarchy of the NY families. Giancana and Auippa were front bosses, in the NY sense.