No, you had a bad test setup. BT is 10dB below wifi, I can't see how what you are saying makes sense. Also it uses simple encodings that save on processing power but require more rf power to be decoded successfully.
So at -10db the energy has been halved over 3 times.
The inverse square law means this is just the difference between 1 meter and 3 meters. And your WiFi has no problems at 3 meters from the AP.
I was not in a test chamber at all and I had all sorts of real world background noise. Not sure what you mean, if bad setup means real-world with all sorts of automobile RF noise then yes, it was a bad setup?