I don't think there is any question that what Essendon have done is worse, both in the behaviour that led to the penalties and their behaviour as an 'AFL citizen' since. Clearly we co-operated once we knew we were gone, whereas Essendon, besides the sham they put on for that first press conference and I suppose the Switkowski report, have fought tooth and nail.
However I think it's valid to point out that their penalties are not limited to just the draft stuff. The loss of premiership points was significant - they had a finals appearance taken away from them in a year when they were showing plenty and had a backs-to-the-wall-us-against-them thing going on. Who knows what they might have achieved? Moreover, the draft penalties were only for the governance issues (which also cost them senior administration personnel, fines, and their coach for a year). The doping infractions will incur further penalties.
Demetriou's comment about co-operation was ludicrous. But Essendon have likely only delayed the full consequences. By the time it's all played out, I'd be surprised if anyone thinks they've got off lightly.