Originally Posted by iseo
AZ FFs only earn 25% more miles on elite status and 50% more miles on Elite plus status.

I am curious about the following. Is AZ's 50% ElitePlus bonus applicable to the COS-related bonus miles too or not?
Even without that,the COS bonus AZ gives for business cabin fares means that a DL ElitePlus earns no more than an AZ ElitePlus flying the same flights.