It's a taunt with a double-meaning.
"You could save the Concordia, but you couldn't save the Tiger's Claw." This way it looks like he's rubbing it in Blair's face. In other words, "You're not so hot."
But, it seems to me that it's also a reference to Jazz's feelings about Blair's failure to save Goddard Colony. He saw that as blatant neglect on the part of the Tiger's Claw, and stated it as his reason for joining the Society of the Mandarins.
So, it's a slap in Blair's face and a subtle foreshadowing of Jazz's motives for treason.