The discussion of FFG COs is OBE as the last of them is now in major command. The new discussion would be LCS CO vs DDG CO (or LSD CO), not really worth much discussion IMO. These are simply slating decisions. Slightly dated example, but same as comparing CO of a Hornet vs Rhino squadron. They're all COs that will be O-6s some day. DDGs and Rhinos are more capable but there are plenty of reasons someone might want to command a legacy Hornet squadron or LCS. Love of the platform, desire for a certain homeport, timing/needs of the Navy, etc.