BTW,
The terms of the plea are very extensive and highly punitive in terms of lifetime on parole and lifetime restrictions on his movements, residence, he may never drink alcohol or look at porn or visit any sex-related business ever again, and must agree to a penile implant the will record his sexual arousal for the rest of his life. Also, the plea requires Sharper to enter an actual "guilty" plea (not merely no contest) to Fed drug charges and 3 specific rape charges in NOLA.
In addition, he must (to the satisfaction of prosecutors) "give truthful information about his crimes and accomplices to investigators, prosecutors, grand juries and trial juries "whenever and wherever requested."" That includes in the upcoming trials of his accomplices. That means the prosecution did not cut him a deal based on not being able to get multiple convictions against him personally, but rather based partly upon how it will make convictions against others easier.
In light of all that, I rescind my implication that most of the specific legal cases against him might have been "weak". It seems clear that he actually agreed to punishments that go well beyond what most convicted rapists get, which he wouldn't have done unless he knew multiple guilty counts were very likely.