This is becoming one of the main issues with WWE ppv. They tend to only advertise 1, 2 or 3 matches and let the rest of the card come as a surprise for the fans.
They haven't realised that adding more matches prior to the event makes us wanting to see it more.
And I don't know why they didn't do it. They have a lot of storylines involving a lot of wrestlers. They could've easily pu the Cody/Zeke match in SS instead of airing it on SD for free. That also goes for the Morrison/Truth feud. If you're mad at Morrison, make him lose at SS, that way everybody wins (You punish the guy, and get more buys of girls wanting to see JoMo)