It's less of a science experiment, and more of a marketing experiment. 3D has matured to the point that you don't need to go around putting "3D" at the end of a film title to show it's gonna be in 3D; so the only question left is, will audiences dig it?
I think that's what he was trying to say, not a "will this work" scenario, but a "will this work [under these conditions]" thing. But this is pure speculation of course, he could have meant science experiment literally. I suppose.