Stationair8, there are 2 answers to your question.
The first answer has been given by sixtiesrelic
Secondly, the capacity for example between Sydney & Melbourne remained equal as TN operated the AB3 with 220 (or there abouts) seats every 2 hours and AN operated the 732 hourly with some 112 seats. The 'capacity' therefore remained the same. That was the theory anyway.