It's "just the glasses"; the tv has a light, called DLP Link, that crushes the blacks and washes the image in a green light. This will be obvious without the glasses on. The Optoma and Viewsonic glasses can block this light; they use this light to turn the shutters on and off, and are both off during the DLP Link duration. The Mitsubishi glasses use the emitter instead of the DLP Link, it can't sense when the light is on and so can not close the shutters, so the image looks worse than on the Optomas and Viewsonics. You should read this whole thread and it will become easier to understand.
This thread is titled " What's wrong with 3D mode on my Mitsubishi DLP?"
The answer: DLP Link
The solution: get Optoma or Viewsonic glasses.