Not all featured hubs seem to be "extraordianary" and not all hubs that are not featured are "ordinary". However, featuring needs something standing out like the topic, participation through comments, pictures or a product promotion. For example, a hub on some very technical topic may not draw popular attention.Since featuring is for promotion of hub pages too, it is advisable to feature familiar names, and familiar names draw particiaption also anyway, so everything is interelated. It is just my opinion based on what I have been observing. Definitly featuring helps the authors too, because it gives them visibility. "Are they dumb?" it is matter of opinion, I guess.