pretty much. theres no way that MELY's 100 TH/s worth of servers was pumping out 200-800 BTC per day. 100 TH/s gets you about 3 per day and a block every week or two.
I'm guessing that those stats are for GHash as a whole, as opposed to just MELY. The second number you posted, with about 150 BTC, is likely MELY's contribution as a whole since December.