Steps to reproduce:
1. Create a project which prints out Screen.GetResolution and Screen.resolutions
2. Build it as standalone
3. See two arrays of possible resolutions printed out. They look the same, however Object.Equals returns false.

Screen.GetResolution was unlisted in documentation of 4.2.2, however is still accessible from scripts in all three tested versions. Version 4.3.1 has it listed in Screen class documentation, however descriptions is empty.

Link to documentation: http://docs.unity3d.com/Documentation/ScriptReference/Screen.html