Are you talking about what a92 did at bluerevo? And if it's that, you don't air dash back, you do jb after super jumping back or something like that. It's pretty sick.
And 5c or 2c as a punish all depends on how much stars you have after the burst, typically if I don't have an extra 3 stars I just do 2c, if I do have an extra 3 stars (almost never) I go for the same combo again. it wouldn't make sense to not do the corner carry combo if you have the stars for it after a burst, it's also important to pay attention to how high they are off the ground.