With pleasure.
Your never going to be able to establish a definitive answer, the head to head test was carried out on utube between the Airflex the model below the Storm and the Enforcer, which resulted in different conclusions, Mat at Cleansmart suggested an independent test be carried out, so draw your own conclusions.
Bottom line is you have to decide yourself using all the evidence available, i have no idea what the credibility of John Martins technical claims are regarding the specifications etc, he appears to have a great deal of knowledge, but i feel that some history which i am not party to exists, due to his response.
I am not trying to antagonise him i simply asked him a question, because i was intrigued about his wealth of knowledge on a subject he has gone to a lot of trouble to over the years to inform the rest of us about.