It requires continued low price (thus high load factor) and is very difficult to fill if the price rises.
AJ is not even giving the CBR residents the choice by establishing a JQ base line. What he is disguising is that there are probably not enough TTTs (Tits Tatts n Thongs ie price sensitive customers) in CBR to warrant JQ - high loads would be inconsistent. The CBR demographic is more likely full-service.