It could speak to the roles that may have had in the murder.
Also, I think it would require some thought to compare the two probabilities. Say there were 100 opportunities for Guede to leave DNA and he left four detectable samples. If Amanda and Raffaele had 25 opportunities I don't think it would be so stunning that nothing was found. The less of a role one supposes they had in the murder the less surprising it becomes. If one wanted to push a scenario where Guede had a minor role and Amanda and Raffaele had a major role wrestling Meredith across the room, then it would be suprising.
If most of the dust in the room is Merediths, a tiny bit is from other housemates, and a tiny tiny bit of that tiny bit is from Raffaele, it's a surprise that it's his that comes through strongly and theirs that comes through weakly.
Now I am four pages behind and work will keep me from catching up ...not that it matters as you seem to ignore any argument I have anyway. Though we seem to have finally skipped past the non murder weapon, ...the "double DNA" knife and that is as it should be. Stefanoni operated an illegal lab! Not in real terms but in the sense that she just does not have the facility, the ability, or the records to confirm the conclusions she has made. For the knife there was no second test, no second run, no negative and positive control samples concentrated to the same degree as the low copy number sample from the knife blade. We can leave out non- certified lab, no lab manual, no written SOP's for this lab. We can also leave out high levels of conflict of interest by the lab director signing on as a prosecutor advisor. This last truth about this case is so illegal and so unethical as it must nullify any result found by this lab.
In what world would you want your daughter or son to be tested by the prosecutors consultant's lab? It's insane!
Now we have moved on to RS DNA on the bra clasp. Again this is a Low copy number sample and for you to classify it as somehow a "majority" sample is unfair. It is clearly a highly mixed sample. The independent expert qualified it as being so mixed that she could find a sample matched to the President of the Court and to even herself.
Perhaps you don’t realize that the truth about the CSI is that it started on Nov 2, 2007 and then between that time and Dec 18th 2007 there were a number of interventions into the scene such that even Stefanoni could not tell the court who went there and when and what they did there. What was clear was that there was an undocumented investigation or intrusion between the dates above. The mattress did not float out to the living room...the many , many uncollected yet bloody clothing articles were moved about in the murder room...under Merediths bed there were no longer shopping bags and gifts for her family but instead we clearly see piles of disorganized and miscellaneous shoes, boots, and articles of clothing. Even a hot water bag probably used by Meredith to help relieve cramps and which most likely seems to be her pillow at death, or that her new boots her father spoke about as he remembered their last meeting. She was so proud of her new boots...ironic these boots were near her head at death but somehow far removed and under her bed by the 18th of December.
So many real details...you mention RG DNA as being slight for such a brutal murder and struggle but don’t forget ...this was the CSI team that could not retrieve one DNA sample from a blood soaked towel. This same CSI team left MK blue blood soaked hoodie with turned inside out sleeves to lay in the room from Nov 2 until Dec 18th. WHY? Or her shoes or socks or purse all left after the first investigation was "complete". I put complete in quotes because why wasn’t it complete? These are the questions you need to consider. Not how some part of RS DNA MAY be on the bra clasp...rather how could it not be? How is Hellmans there? I happen to believe this scientist would not venture this statement if she could not back it up. Unlike Stefanoni who has been shown to be defensive and unforthcoming when asked to show her work. Show your work...if you know it and you are confident then that is a joy, right? Here is my work...see how I crossed my t's and dotted my i's.
I understand this is IMPORTANT! Young lives are at stake! See my careful work? NO! We don’t get this...we, after 4 years still don’t have it. So how can a possible low copy number trace of RS land him in jail for 25 years? It seems to be equal to Hellmann's chances of his DNA being there. Did Meredith lay her bra in the bathroom on a place RS touched when he used that same bathroom that day? Its more likely than Hellmann's DNA being there. But this scientist staked her reputation that she could find Hellmann DNA traces there.
Now consider that this is THE ONE thing you have....the only thing you have that links RS to this crime. Is that enough?