I wouldn't be too surprised if it turned out that they built the game with the fancy lighting system and whetever other gfx doodads they had in the earlier version, were running it fine with the top-of-the-line gear they had in their studio in the hopes that they would be able to optimize it to the point where it would be just about acceptable for sale (remember, the released system requirements back before the delay were very high), but then couldn't quite bring it to the point where it would run well enough on consumer equipment/consoles, so they had to cut it down instead.
Maybe I'm just not cynical enough, but I do doubt they originally set out to deliberately oversell the graphics. A lot can happen in a year of game development.
Maybe I'm just not cynical enough, but I do doubt they originally set out to deliberately oversell the graphics. A lot can happen in a year of game development.