Color Picker x Sample Point

[Krikor]

Color Picker x Sample Point

• Why are the values collected by Color Picker not the same as displayed by Sample point? 
  

I was using Color Picker to find two points; each on a different image that have the same Value. (in this case I was looking for points with 85%).

But when creating the Sample points at the specific coordinates found in the two images to 85% of value, the values displayed in the Sample Point window are different from 85%. (83.9 point 01 and 86.3 point 02) 

At first I thought it might be due to the value used for the Radius - Sample average, in the color Picker. Initially I was using the value of 4 for the radius.
But I tested it with other radius values for the same coordinates and they also didn't match the values displayed in Samples Points.

I finally gave up on Color Picker and used Pointer, which finds and records the same values as those displayed in Sample Point.

• Am I using Color Picker the wrong way? Any adjustments I should have made? A bug? An outdated tool?
  

Thx!