Obviously the rate of descent is higher than the rate of climb in the jets that I flew, but as you said it doesnot has to be related to this.(since we are not talking about a pattern change)
As I said initially I work with the: Tilt, Range,Gain,RCT, etc. but once it saturates it becomes impossible to get a clear picture.
And this ocurrs at low altitude after descent, that why I put more weight on the coldsoaked antena theory!!!