You might not want to get into an argument based in fancy stats if your goal is to argue emelin over gorges.
Emelin was carried by Markov. Yes, subban can 'carry' Emelin even more, but regardless, you don't want your #1 pairing having a guy who needs to be carried. Gorges is in another league than Emelin when it comes to shot/scoring chance prevention. It's not particularly close either, last time I checked.
If you really wanna have some fun on extra skater, though, start comparing diaz and emelin. Good stuff
edit: and for the record, I don't want to 'get rid of him'. I want to roll back time and force him to take a 2-2.5million/year contract like he's worth.