Questions about diesel v. hybrids

Diesel can save the world right?

Ultimately, I hate comparing diesel technology to hybrid technology because it's like comparing apples to oranges. Unlike diesel technology, hybrid technology is not fuel dependent and hybrid technology can make diesel technology more fuel efficient. Still, I have a couple of issues regarding the hybrid cars versus diesel cars debate.

1.) Why are tests between diesel technology and hybrid technology made on the highway when it is city driving and congestion that result in the worst fuel economy, the worst pollution, and the worst CO2 emissions? If congestion is the future, why are we testing the past?

2.) It takes more oil to create a gallon of diesel than a gallon of gasoline. Creating diesel also causes more pollution. Why isn't this added into the fuel economy of diesel vehicles if the point is to reduce oil consumption?

I could go on, but I'll leave it that for now.