Well, that's how the analog input will be digitised by the wiim, and yes, thus resulting in creating a specific bitrate from that input.
But there's still no bitrate for an analog input itself, such as 900 kbps that you might see for a streaming input.
To me it makes sense that wiim doesn't show its adc bitrate info for an analog input, but I can also see that others may quite like that, as misleading as it might be.