BCF Breath.........if true he made a mistake, we all make them on occasions and luckily in this case ATC picked up on it.
Having operated into and out of AKL numerous times in the last few months, making a mistake there is not all that hard, especially if you have not been there for a while. The AKL signage would have to be some of the worst I've seen.
Without better signs, it's crazy to have so close to a main runway, a taxiway which substitutes as a standby runway (Markings and all). Accident waiting to happen!
edited because I could not spell misstake!