How we confused the comparison between high level radiated susceptibility measurements in the reverberation chamber and at the open area test site

We have compared a true high level radiated susceptibility measurement of a generic test object at an open area test site with a similar measurement in a reverberation chamber. The results show that the applied electro-magnetic field, necessary to disturb the electronics at the open area test site is the same as an equivalent electro-magnetic field derived from measurements in the reverberation chamber.