Almost forgot I posted this thread.

Yeah, that's what I would assume too. Which would make the larger injectors a better choice.

But then again, I was reading over on a hypermiler forum and one guy got all kinds of crazy and set up a custom fuel rail that had two injectors for each cylinder. He used the smallest injectors he could find because he felt that the smaller injector atomized the fuel better, which makes for a more efficient burn.
he didn't have much scientific data to back that claim up, but it does make some sense.