Originally Posted by Edgar Perez

I understood somewhat different:
A = Strength of the signal received by the Rx. Kind of like a "volume" of a TV.
Q = The quality of the data received by the Rx. The number of GOOD data frames received, divided over the TOTAL number of frames, resulting in a percentage of GOOD received.

As such, Q values are the most critical as it was ultimately the Rx needs (good data).
We do need to be aware that we only "see" the data as transmitted by the Rx back to the Tx. That links is not as robust, so we may lose some information.