Steam's Christmas sale is pretty awesome and exciting, something more of Stardock's sale lacks.
You guys should go on Archive.org and look at the Steam home page this time BEFORE Impulse existed.
Here's Christmas Eve 2007:
Steam
http://web.archive.org/web/20071224202630/www.steampowered.com/v/index.php
and
Direct2Drive:
http://web.archive.org/web/20071224220928/http://www.direct2drive.com/
Pretty much the same for 2006..and 2005...and 2004...and 2003...and 2002.
Until Impulse arrived and started these weekend/holiday mega sales, these "awesome and exciting" sales didn't happen.
Sure, with a 7 year head start, Steam has a massive catalog to take advantage of. As a gamer, that's great. Good for them. It'll take Impulse some time to get that kind of catalog.
But it's worth noting that it took until Impulse becoming a viable competitor for suddenly everyone to discover the value of these "awesome and exciting" sales.
I would argue that ALL of these sales, are basically the result of Impulse existing to start putting pressure on.
Unless someone wants to argue that it's a coincidence that these aggressive holiday specials didn't exist for the first 6 years Steam existed and then only after Impulse arrives and starts doing this stuff that everyone decides to give gamers a huge break.