JCL wrote something about this. It was only a single deal for a free tool and an Atari community project. Atari is not some kind of an investor.

For our last model pack at Dexsoft I did a lot of renderings in different engines. The shaders in Unity are similar to the ones from Gamestudio, but the material editor is much more easy to use.
The possibilities in Torque3D are better, I could create some quite realistic materials and the new material editor is easy to use.
But the best results are made in C4. I have additional features like microfacet shading, spec bloom and good control over lighting and shadows. So this brings a bit more reality into play.

But if you are concerned about scripting, then Unity and A7 are more easy to get into.