Antonov,
I didn't claim to know what either operators DOCs were - this thread is full of those claiming to know which aircraft is the more econmical to operate - impossible to know unless they have access to such data.
Regarding the deal the SAA did with FR - that is public information that was disclosed a couple of years ago through the FOI in Ireland. Basically FR get everything free whilst everyone else subsidised their operation. WIth EI pulling off the SNN-LHR route it dropped the SAA in the mire as they were left with few paying customers. Effectively the SAA levied existing customers to fund FRs new operation that went into direct competition with those operators.
FRs MO is to get others to fund their operation.