Did you guys read the entire post? The cable is an ADDITIONAL DETERRENT. Not the main lock. It becomes one more hassle for the would-be thief to overcome along with the main U-lock.

Then use one or more kryptonite U locks (the best you can afford) to lock the frame and/or wheels in addition to the above [cable] lock. This is deterrence. Even hearty bike thieves will move on to another 'easier' target when they see this. The more locks that they have to break or cut through, even with a fast grinder, the better. Opportunistic thieves won't even look twice before moving on.