Ohhhhh!! I get it now!
Cohen IS on our side, or is at least "forced" to cooperate. NYS is a one party state. So if someone else was recording, they can't legally release the tapes/use in court.
But if they tell Cohen to say he was recording, the tapes are legal.
How many people did Cohen talk to privately? I bet POTUS really DOES have Comey tapes. lol