Airports and Airlines have that funny kind of relationship where neither one wants to see the other doing much better than they are. With airlines in Asia-Pacific, such as Qantas and Air New Zealand, recording bumper profits, it's not all that surprising that airports in the region are feeling a little left out. Airlines are eating too much of the cake Last week Airports Council International Asia-Pacific released a stinging attack accusing airlines of charging "excessive airfares that threaten the industry's long-term recovery." For good measure, it also said that airlines are capitalizing on the lack of competition and pent-up…