User blog comment:A Lonely Nomad/(OFFICIAL) The balancing issues Treyarch are taking against noob tubes/@comment-2195984-20100914031754/@comment-124.169.99.27-20100914095615

Im pretty sure that the killstreaks are the same - one set set in total but its customisable..

And the perk 3 thing is bullshit. I've seen videos and people choose their own tier 3 perk, maybe it was rumoured before the vids...