What they really need to compare would be fuel cost per 1000 miles flown or something like that, that would show a like for like comparison.
Remember, Maxjet was never qualified for 120 minute or greater ETOPS, meaning their flights were all operated under the 60 minute rule. This could have caused them to spend significantly more on fuel. I agree that a comparison needs to be made on cost per pound or 1000 miles or some other method.
Does Silverjet have 120 min ETOPS or are they operating under the same rule that MY was?