Nobody is matching our costs. The legacies aren't even close. Even SWA has creeped above us now on their costs. We have the lowest non-fuel CASM in the industry, and match SWA on CASM including fuel. The legacies are still far away from matching our costs. We'll weather a recession just fine.
And what's your RASM?
Let's compare CY2007 numbers.
AAI CASM 9.57 cents
AAI RASM 10.18 cents
AAI RASM - CASM .61 cents
UAUA mainline CASM 11.39 cents
UAUA mainline RASM 12.03 cents
UAUA RASM - CASM .64 cents
I haven't pulled up RASM/CASM comparisons for the rest of the legacies, but CASM doesn't mean squat unless you also compare RASM.
As for your claim that no one's lower, check JBLU's 2007 numbers
JBLU CASM 8.38 cents
JBLU RASM 8.91 cents
JBLU RASM - CASM .53 cents
JBLU also has longer stage lengths than AAI which is why their RASM and CASM are lower.