There are games where you blast, and there are game where you sneak. The iPhone has a wide selection of the former, but real stealth games, not so much. Splinter Cell, then, is more than welcome to the App Store.
It's always interesting to see a well-known game franchise fold itself up, suck its belly in a cram itself into the iPhone, but it's not always gratifying: often, the game concepts are fundamentally changed. Remember Metal Gear Solid for the iPhone? It ran on rails, defying a looooong history of free sneaking. (Linear, yes, but still: free.) Metal Gear Solid! On rails!