Are network news anchors really underexposed? Depends on how you measure it.

Compared with Walter Cronkite, yes, Charlie Gibson is hardly a blip on the mental radars of Americans. But compared with most other figures of the media universe, network anchors are shining bright; they are, in fact, the most famous journalists in the country who don't have to put "journalist" in quote marks (Hello, Regis).

This abundance of exposure, though, has not stopped the networks from assuming that all of their ...