Will have to agree to disagree on that one. And I think he's there and Couric isn't is due to Couric at a certain point trying the Barbara Walters track pivoting into the talk show side of things.
But I think him being fairly interchangeable with another journalist is an indicator that his role isn't personality driven like the previously mentioned: he's there to deliver the news and that's essentially it. I think his Gaza Strip/Haiti/etc. work qualifies him as a journalist and from what I've seen of him, has delivered factual news (with varying levels of importance, but realistically, it is unlikely to have hard hitting items daily).