If you change the settings (check readme.txt), you can achieve the exact same screenshots. There is no doubt at all that those screenshots were created using that tech demo. People should realize this, instead of denying the truth to themselves. XSI posted those shots in a development diary, and passed them off as their own work, which it clearly isn't. That's simply not right, you don't expect that from a professional company.
Btw, I wonder why the first screenshot is so small, compared to the others it's a thumbnail.
The text is barely legible... It's almost as if we're not supposed to recognize it.