I suspected as much. Have trawled through various online agents and there is some significant variances in terms of pricing and availability. It definitely appears that some websites/agents have access to inventory for a particular airline that others do not. Some interesting anomalies too.
Any online agents/websites you recommend/suggest? I've tried the usuals like expedia, zuji, skyscanner, kayak, farecompare, mobissimo, ebookers, bestflights, travelscene...
Which website(s) is best for pricing multi-leg trips? And not just 3 legs like a stopover. I've haven't come across many engines that allow more than 3.