Yeah, Amir0x has a point, here.
It's like a combination plate. There are 6 different things in the plate, and you only like some of them. And even if there is one that you find it delicious, you can't ask a full plate of that.
Sony took a very conservative approach with Sports Champion, cloning the Wii Sports - WSR formula. A set of small games.
Taking in consideration the features of PS3 (hard drive, bigger online userbase, etc), SC should be something like a frontend for different bigger games, as DLC.
You buy the "SC main package", for 30$, in PSN, with Basic sets of 6 sports (that is what SC is right now), and then you are able to buy the PRO version of the games (and also, Basic and PRO version of upcoming games). You loved Table Tennis? You pay 15$ and you have a "full" Table Tennis game, similar to the Rockstar one. Tournaments with any combination of players and AI. Career mode with ingame money, hundred of unlockables that you buy with ingame money, customization, even skills that are added to your "real" skills (being able then to hit the ball faster if you're not a very strong player, etc). Online play. All that kind of things.