Too many variables, who is running the wand, a young kid, some one in shape that can really hump that wand or an older guy?
In wide open areas back in the day I could clean 2,000sq/ft an hour but not for much more than an hour or two. It was also my family's company, you won't see many tech's willing to take a beating unless there is some serious compensation for them.
And anytime you want to have a serious conversation about HWE I'd be glad to do that with you. Yes I do get missed up in your method battles but part of it I do as entertainment because I don't think you are serious.
When you want to be serious just start the thread and that's all I will be, no games. I have a feeling we will just agree to disagree.
I've been cleaning since I was 12-yrs old and the HWE method is the best I've seen in general, in some situations low moisture is better but in general it's HWE.
If in fact air cell was better why would I not switch?
Those machines are such a low investment I'd buy a dozen of them, I could sell off my fleet to cargo vans and go all Ford Transit Connects. I'd save on vehicle fuel bills and maintenance, save on repairs and the fuel on all my TM's.
I'd do it in a second if I truly thought it were better, but I don't believe they are.