Unfortunately, I haven't played either game. But I did do a little bit of digging to figure some information out.
De blob does seem to involve motion controls, as it's required for jumping and transforming, which I'm assuming are two of the core mechanics you'll need for this kind of game.
http://www.allgame.com/game.php?id=64397&tab=controls
Little King's Story seems to have no motion controls. I found this from looking up a review that outright said it had no motion control (oddly enough, the reviewer listed this as a criticism :P) and checking the controls on two sites.
http://www.gamefly.com/Rent-Little-King%27s-Story/132270/GameplayControls/#axzz2zK4ECDn9
http://www.allgame.com/game.php?id=65538&tab=controls