Looks like you said…
I assume that this would change my original question? Anti-glare glass being more like matt paper so in this case it would not make sense to use glossy paper, or would it?
No. The anti-glare glass simply allows you to see the print as it is, preventing the glare of light on the glass from distorting and/or blocking the viewers visual access to the print. The gloss paper looks glossier and the matte paper looks mattier, simply put.
Example: Are you familiar with the properties of a polarizing lens filter? Or polarized sunglasses?
Look at a pond on a sunny (or more so on a "glarey") day. Your eyes tell you it’s all blue, but it’s not. The reflected light comes to your eyes much brighter and "whiter" (so to speak), but you still think it’s all blue. Your brain tricks you into seeing only blue, because that’s what you expect to see, but the camera (we won’t get into film vs. digital here) sees what is really there.
Now hold a polarizing filter in front of your eye and you will see far more color as you turn the filter and polarize the reflected light. You will also see into the water itself much better.
Eyes and cameras do NOT see objects. They see only the light that is reflected from the object being viewed.
So non-glare picture frame glass stops the reflected light from the room lights from bouncing back at your eyes. It "absorbs" the reflected glare so your eyes see through the glass much more clearly.
Go to
http://www.worldstart.com/tips/tips.php/139 for some good lessons on polarized light.