The "gaming_hardware" capability refers to the ability to connect to a motion-enabled remote. In other words, the unit supports a WiFi Direct or Bluetooth remote. It doesn't change depending on what type of remote is actually being used. As far as I know, there isn't currently any easy way to detect whether OpenGL is implemented. If you really wanted to reliably detect whether nonorthogonal rotations are supported, I suppose you could rotate a small bitmap by 45 degrees and use GetByteArray to check whether it worked, although that's pretty ugly.
--Mark
