I found a document published by the California Department of Corrections (2011) which gives a statistical breakdown of actual prison time served by inmates.
The statistics are broken-down by specific crime... i.e., 1st degree murder, manslaughter, rape, etc.
In short, it states the mean/median time served by an inmate (for a specific crime) before they are first paroled.
According to the document, inmates convicted of first degree murder (pre 11-8-78) serve an average of 408 months in California, before they are released on parole.
408 months = 34 years
Extrapolate what you will from those figures, but statistics are hard to dispute.
Post 11-8-78, the average first degree murderer serves 344 months in California, which translates to 28.5 years.
I'm not a fan of Bobby, and personally, I'd have no problem seeing him die in jail.
He has a smug attitude, which I find repelling.
However, I'm also a firm believer that punishment should be carried-out in a consistent manner. People perpetrating similar crimes, should serve similar sentences.
If we feel that our justice system is being too lenient on crime (in general), we should enact laws which are tougher (across the board) on EVERYONE.
I think it's pretty safe to conclude (at this point) that being associated with "the Manson Family" (and the notoriety that entails), creates obstacles for Bobby, Bruce and Leslie (in terms of parole) that the average (unknown) inmate will never know.
Common sense and statistical data seem to support that conclusion.
I guess, how one feels about this apparent "double standard" situation, depends largely upon one's personal feelings towards Bobby, versus their feelings regarding consistency in punishment.
At any rate, here's the PDF document:
As I said previously, extrapolate what you will...