The link you quoted states "Maximum total USB peripheral current draw 600mA/1.2A (switchable)". This is the current the Pi could supply to external peripherals, not what the Pi needs.
In fact the Pi uses less than 1A, depending on what peripherals you have attached.
I run all my Pis with an Apple 5W (1A) charger, although I use a powered hub for external HD (which won't work with the Pi and need more current).
If the Samsung claims to supply: 9V 1.67A I wouldn't let it near my Pi (or any 5V USB device). In general is not a good idea to use "chargers" as they often have poorly regulated voltage (which is OK for the purpose), and are designed to charge batteries.