These are really not terribly impressive, considering the obvious comparison would be to Noctua's NF-F12 iPPC 3000rpm industrial fans which have a 7.63mm H20 static pressure compared to the ~7.13mm of these fans, and a 109CFM airflow compared to 121 CFM, BUT, with only a 43.5db decibel level compared to the eardrum shattering 60.9db for these jet engine turbines.
Personally, if you want to really move a lot of air I'd just slap some of the Noctua NF-A14 iPPC 3000rpm fans on a heatsink or radiator, because with over 10mm static pressure and 158 CFM, if brute force is going to be the key, it's pretty hard to beat the performance of those fans and they still only belt out 41.3db max. And at only 25 bucks for the 140mm version, they are also cheaper.
I think EK still has some work to do in the lab.