Sleeping Dogs activates on Steam, Far Cry 3 has to be activated with Ubisoft's thing (forget what it's called) -- it's not a steam key. I'm not sure about Hitman absolution, all the details should be in the email you got when you redeemed the main key. It will tell you where/how to activate it.
:/ I ordered my 7970 ghz two days before they announced the never settle bundle. Nobody, not AMD, newegg, vender, would hook me up with a copy. All I really wanted was FC3 anyways... looks like I'll try to get a code for the NSB sometime after christmas.