I'd say Skywest loses this flying, and that isn't good for them. Also, with Southwest getting a hold of ATL gates, Delta had better dump RJs and get some more mainline equipment to fight them off. An RJ against a Southwest 737 is a win for Southwest, and I bet Delta's management knows that. Too bad for Skywest.
Last time I checked, Delta was already competing against those other ATL gates with AIRTRAN.