I have seen both, let me tell you my feelings (it may be more subjective, if possible, it is best to see them on site before making a decision).
1. In terms of 3D video, the effect is similar to that of NV. The native 3D movie effects are very good, and the 2D converted 3D movie effects are average. But for watching non-native 3D videos, the Samsung one is really convenient, while the NV one requires downloading software and setting up, etc., which is extremely troublesome (more convenient ones like POWER DVD have to be cracked, and some formats of videos are troublesome to add subtitles). If I were to choose from a film perspective, I would definitely choose the Samsung one.
2. This Samsung model can support 3D games, but it is also a 2D to 3D conversion (one frame is divided into two frames), and the effect is not as good as that of NV (two frames are directly output). But the advantage is that it has no impact on game performance. The 3D effect of NV games is better than that of Samsung, but the performance will decrease when 3D is turned on (so a graphics card with better performance is required). If I were to choose from a gaming perspective, I would definitely choose NV.
3. I don’t know what you mean by tif-3D software. I have never used it, and Samsung has never mentioned installing this software. I just searched and found no information about this software. Samsung's game graphics are all 2D to 3D, and theoretically all games can support it (the effects are just good and bad).