Hello,
I just saw the post you bumped. Unfortunately, without knowing what case you are referring to, I have no idea if I'm familiar with the facts of the case. Without such, I have no way to assess whether, by my calibrations, there was sufficient relevant, material and highly reliable inculpatory evidence produced at trial to support the conviction and the punishment (death). Similarly, I can't guage the quality of the defense's case-in-chief, nor can I measure how pursuasive the defendant's attorneys were.
Wrongful convictions stem from many things; e.g., trial error (dent on the judge), jury error (this includes a jury with poor evidence assessment skills), a false or coerced confession (usually brought about by LE), manufacturing or withholding evidence by LE and/or prosecutors, woeful defense attorneys (this includes attorneys who lack significant powers of persuasion), stealth jurors, etc..
After OJ's trial, my belief is that, on balance, jurors became more jaded toward defendants, particularly in non-celebrity, high-profile cases. And it's my belief that, moreso than before, jurors have accordingly lowered their internal standard as regards the reliability of evidence and testing for the sufficiency of evidence. Hence, in crime forums, I often talk to whether the reliability of evidence necessary to support the charge truly exists -- as I do in Caylee's case.
In Websleuths "crimes in the news" forum, I posted a wrongful conviction case earlier today that recently saw a truly stunning reversal of fortune for defendants who had been in prison for fifteen years and had basically exhausted their appeals and lost all but the tiniest sliver of hope -- this case had long been #4 on my list of likely wrongful convictions. Moreso than anything else, my guages lay the primary responsibility for their wrongful convictions on the jury.
Be that as it may, I do hold that in murder trials held where no corpus delicti exists, the evidence can support a murder one charge provided the evidence is "clear and unyielding".
HTH