Just look at Quake 4? I'm sorry, I don't have access to your imaginary world or your time machine so I can't compare yet. So far, the only thing we've seen of the Doom 3 engine is.. Doom 3. You can look at all the previews in the world, but you still have nothing to back up your statements with. And you have not been able to tell anyone what's so phenomenal about the Doom 3 engine either. Since you used the term phenomenal, I'm assuming it does something that the other engines don't, and exceptionally well nonetheless. Now, what is it?
You're living proof that hype really works.
Edit: Formatted the text to look better.