WinstonDeckard has a point, having more wrestling content doesn't necessarily score ratings.
Although, I think we all would agree as wrestling fans that SmackDown! is indeed a more satisfying show to watch than Raw.
But, the poorer network aside, SD! still has a number of things working against it if there was a race against Raw. For one, SD! isn't live and people just get jacked for the live atmosphere for televised wrestling. How often do we hear about edited segments on SD! whenever a spot is botched or something else goes not quite the way WWE wanted it go? As much as the WWE tries to deny it, but, the IWC DOES INDEED make up a bigger portion of their audience than they will ever admit. So, news about editing and even spoilers affects the ratings when it's all said and done.
Another factor is that Raw is like the favorite child of family. It'll always get the bigger food portions at supper time, it'll get to stay up late when it's siblings have to go to bad, and Raw, in WWE's eyes, will never do no wrong. So, Raw gets all the hype, attention, and promotion while SD!, ECW and Superstars will fight over the leftovers.
With all of that promotion, Raw will always attract the attention of casual wrestling fans and others while SD! will always have it's following of die-hard wrestling fans, but really wont enjoy an "expanded" audience under it's current format. That's not a bad thing though... save SD! for ourselves, I believe.
I gotta admit though, I would LOVE to see SD! go live and move to a stronger network (such as USA or something bigger) and just beat the crap outta Raw in the ratings. Especially if both shows kept their current format -- SD! being the wrestling show and Raw being... uh... whatever the hell it's trying to be.
Vince would lose some sleep if the numbers revealed that his "vision" of what he thinks WWE is as being demonstrated on Raw (guest hosts aside since NBC is forcing the guest host concept on Raw... but that doesn't excuse the trainwreck that Raw has been for the past 8 years before) to what the fans REALLY want... which would be SD! . But, I dream...
But then, again, if SD! suddenly became a ratings powerhouse, Vince would suddenly be more interested in the brand and then go on to micromanage the hell out of SD! turning it into another clusterf---k that Raw is.
Double edge sword!