Originally Posted by CreekDirt
I don't understand why they would change what already works. Does it have a button like the Note stylus?
The Note is marketed to a specific segment, completely different from the Galaxy S line of phones. The Note uses a Wacom digitizer for the stylus that is much more precise, whereas the S3 uses a traditional capacitive pen because it isn't marketed to have the same kind of stylus functionality as the Note (and the Wacom digitizer does add a certain amount cost) - otherwise they'd include the stylus with the S3 the same way it's included with the Note.
Actually, the C-Pen is more than a regular capacitive stylus since it apparently doesn't work with other capacitive screens for some reason, but the principle is still the same. It's like wondering why your cell phone is missing the nice 10 inch screen from a tablet.