Strandman, many of the runout routes in New England get few or no ascents, which means that they are covered in lichen, dirt and pine needles. Hard to give three stars to such a route.
Heck, I did Intimidation 20 years ago and it was like that. I figured it was a great route but dirty and would only get one star in the Rumney guidebook. I gather that it has been cleaned up since.
Three star rock climbs are just that, rock climbs. Pine needles, lichen, and dirt hummocks automatically negate the three star rating unless you are the guidebook author and first ascentionist.
We can all quibble about stars, but the guy perusing the new guidebook doesn't want to have to get out his nut tool to dig the dirt out of a crack on a "three star" route in order to climb it.