Reader DC SCUP catalog from Adobe Inc. is mapped to Patch Manager, If you are not seeing them under "Software Publishing->Synchronization Settings->Other catalogs". You should run the "Third Party Updates Configuration wizard from "Software Publishing->Patch Manager Update Configuration wizard". After Sync the DC packages will be available under Adobe Systems Inc., Packages node under Software publishing.
Also just to chime in with my 2 cents, I cannot get the detection logic to work to install DC through patch manager. My post was ignored so it was either missed or dont care or its just a problem for me