I hope nothing's getting lost in translation here.
I'm not a sceptic of 1280x720, as I've seen something very similar, and I have no doubt it looks great, as long as you don't get closer than about 4 feet to the screen when it's projected at about 100" diagonal, which you wouldn't do anyway under normal circumstances.
It's just that I did want to get that close to the screen, so as to have the in-game image 1:1 scale, as if I could just reach out and touch the objects in it, while having a lot of my peripheral vision filled with the rest of the screen. And what I found was, the resolutions you need to do that, while still getting a sharp well-defined image, would require using projectors that cost tens or hundreds of thousands of dollars and which aren't exactly designed for home use. Which is to say, I want the impossible.
It's not to say 1280x720 projected at 100" and viewed from 6-8 feet away, doesn't look good or isn't immersive, even in 2D. It is. And if anyone ever gets the chance to check it out, I can recommend doing so.
And more than that, if you can now buy a projector for under $500 that will let you do that, well...
In regards to 3D home projection, I haven't done any research into it before now. I didn't even know there were 120Hz capable projectors. But after what you've said and from what I've since read, I can see you Acer H5360 users are onto something there with that.
Incidentally, your mentioning the 3D being able to help you judge the distance of corners in Grand Turismo, reminds me of something else about normal 2D gaming. There have been a few times over the years when I've been playing a game and due to the way the in-game world is represented by what is basically 2D artwork, it's been practically impossible to judge the distance between in-game objects. Sometimes the artwork will combine or overlap in such a way that there's just no way of knowing where one object begins and the other one ends, or even if they're separate objects. Viewing the scene in 3D in those cases would eliminate that problem altogether. Depending how it's implemented of course. Not making any real point there, just thinking out loud.
Anyway, it does look like technology has finally reached the point where it's more affordable now to project games and movies and TV(?) at home, at an acceptable resolution, and in 3D as well. Doing so isn't a high priority for me right now, but it's good to know it's an option.
Have fun with it.
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