And so, to those of you looking for standing comparisons, I’d say more Lost than Battlestar, more Dr. Who than Heroes, more The Office than My Name Is Earl.”
What the frakkin frak? Those comparisons make no sense!

"It's more a tortoise than a marshmallow, more an overshoe than a stoplight and more a tulip than an outrigger canoe." Watch out for the brown acid, guys...
The shows (Office, Lost, etc) are adult shows in concept. However, what is the main demo for those shows? I would almost bet that it is in the early-to-late 20s.
The demo for
The Office,
Heroes and
My Name is Earl are all pretty similar, strong in the 18-49 age group.
Heroes probably skews the youngest of the group somewhat, but that is supposedly what
SG:U is not like, which contradicts the idea that
SG:U is supposed to skew younger.
Lost also does well in 18-49, but there's no way to tell if that means it has a lot of 18-34 viewers or a lot of 35-49 viewers. For the advertisers, it doesn't matter.
The Nielsens only track 18-49 because that is what advertisers are interested in. The CW targets the female demo 18-34, so that age group is reported for CW shows but not generally for other networks. I've inferred
Heroes' somewhat younger-skewing demo from the fact that it is similar to CW shows in getting a particularly high percentage of viewers via time-shifting. Seems to fit the youth-skewing pattern.
The Office also gets a very high percentage of time-shifting, so I don't see the logic of thinking
Heroes and
The Office have strikingly different demos.