Originally Posted by specuvestor
Obviously Apple likes glossy screens and actually you answered your own question.
What you are seeing is better contrast.
As one who was in the anti-gloss camp, I can tell you that if the anti-reflective coating is done right - and Samsung got it right - absent any direct sources of light such as windows or lamps reflecting from the screen, the glossy screen is no problem. Given the choice I would probably opt for the semi-gloss but some sets such as 55 and up in the Samsung line up just aren't available in the semi-gloss version.
Bottom line: if you can control the active sources of light or white objects that may be exposed to them, you will be OK. Keep in mind that the semi-gloss screens do not give you full immunity in this regard. In my specific case, I wanted the highest CR, the CCFL and 55 inches in the same set, which was LN55C650. It also happens to be glossy - without any negatives in my setup.