I agree, this proves absolutly NOTHING, the report omits more than it tells. For factual information they need to disclose what machines were being tested and against what, maybe they did test against other industry porty machines, such as the Eclipse, but found that the results were not to their liking, so omitted them from the report!!! Perhaps some portys extracted 95% of soil.
What are we supposed to glean from the report on wands, spend your money on 7 different ones before you find the right one??