User blog comment:Agold21/New Black Ops Single Player Trailer/@comment-85.186.179.210-20101013152756/@comment-85.186.179.210-20101013162714

Different series?

Allow me to correct you, this is the exact same franchise, owned by Activision.

Since we have no conclusive evidence to show that for, whatever reason, the Modern Warfare series takes place in a separate "universe", Zakhaev could very easily be in Black Ops.

Look carefully. You can see a bit of the blue and white shirt in COD4. Either way, does it really matter? The rest of his clothes are identical.