This is a solid piece, though it doesn't go into too much depth. Plumer cites a variety of sources and takes a critical eye to some of the excuses cited for the high cost of U.S. projects.
What I found interesting is that Plumer's initial tone led me to believe that he strongly agrees with David Levinson's comments (and perhaps he personally does). But further along in the story, he gets into what's missing from Levinson's analysis and explains why it may be wrong.
Though he does an excellent job of covering the issue from multiple sides, all of Plumer's reporting comes from previously published sources. Adding a few comments from people Plumer spoke to himself would've further improved the story.