@Luit ****************
I don't think there's a difference or that an immigration officer would see under what category you applied. That's guesswork on people's part, but I suspect that the DTV is just the DTV when it comes to immigration. How you qualify for one depends on what criteria individual consulates apply.
Now, if immigration could confirm what they see on their system I'll be happy to be stand corrected, but I am pretty sure I'm right.
If no one else can tell me otherwise, I'll ask the immigration officer what he or she sees when I enter on one, though I'll probably ask when I enter via land. I don't want to waste time at the airport when there's lots of people and the officers there are generally less chatty or personable.