loader.content.width vs loader.width

[regbolD]

I dont quite get this.
I am loading an image and after some calculations to proportionally resize image to fit on the stage I trace:

trace(imageLoader.width / 2);
trace(imageLoader.content.width / 2);

//output
221.425
221.425

these two values are the same, which is understandable..

then I have the option to click on the image and expand it to its full width and height so I can pan it.

and when the image expands, i trace:

trace(imageLoader.width / 2);
trace(imageLoader.content.width / 2);

//output
600.5
221.425

why are these values now different?

shouldnt now these both be 600.5 ?