Unfortunately from reading that interview it's clear that GA has misunderstood what the forensic report said:
http://www.mccannpjfiles.co.uk/PJ/JOHN_LOWE.htm
"There is no evidence to support the view that Madeline MCCann contributed DNA to the swab 3B.
A complex LCN DNA result which appeared to have originated from at least three people was obtained from cellular material recovered from the luggage compartment section 286C 2007 CRL10 (2) area 2. Within the DNA profile of Madeline McCann there are 20 DNA components represented by 19 peaks on a chart. At one of the areas of DNA we routinely examine Madeleine has inherited the same DNA component from both parents; this appears therefore as 1 peak rather than 2, hence 19 rather than 20. Of these 19 components 15 are present within the result from this item; there are 37 components in total. There are 37 components because there are at least 3 contributors; but there could be up to five contributors. In my opinion therefore this result is too complex for meaningful interpretation/inclusion.
Why - ...
Well lets look at the question that is being asked
"Is there DNA from Madeline on the swab "
It would be very simple to say "yes" simply because of the number of components within the result that are also in her reference sample.
What we need to consider, as scientists, is whether the match is genuine and legitimate; because Madeline has deposited DNA as a result of being in the car or whether Madeline merely appears to match the result by chance. The individual components in Madeline's profile are not unique to her, it is the specific combination of 19 components that makes her profile unique above all others. Elements of Madeline's profile are also present within the the profiles of many of the scientists here in Birmingham, myself included. it's important to stress that 50% of Madeline's profile will be shared with each parent. It is not possible in a mixture of more than two people, to determine or evaluate which specific DNA components pair with each other. Namely, we cannot separate the components out into 3 individual DNA profiles.
Therefore, we cannot answer the question: is the match genuine or is it a chance match."
The point he's making isn't that the sample could have come from 5 random people which just magically came together to form a Madeleine-like profile, but to illustrate that it's not the markers that are unique to an individual but the profile. The real problem here is that they can't exclude that the sample could come from a combination of family members who, as we know, had legitimate contact with the vehicle.
Further
"What questions will we never be able to answer with LCN DNA profiling -
When was the DNA deposited -
How was the DNA deposited -
What body fluid(s) does the DIVA originate from -
Was a crime committed."
verreaction: