Wrong, Wrong, Wrong, Wrong. The Alpha dev kits were using similar components. The game will look the same. It's a common practice in the INDUSTRY!
You guys are killing me with your ignorance. This happens at EVERY LAUNCH E3, it is standard stuff.
They are not trying to trick anyone. E3 is at a weird time of the year when the code is not finished or even near finished. All the developers are still working on the game while E3 is going on, they just needed to provide a stable branch of code and probably used a development kit or a pseudo development kit to run the code.
Every person here should
1) learn how to code games
2) Should go behind the scenes at E3 and find out what is really going on behind the curtains.
E3 is really an awkward time for developers because they are still using old hardware and still providing either demos to take time out of coding for the game for weeks to just provide a simple demo that may not be in the final game and is on old pieces of hardware.