I have no issue with being incorrect; however, there was an announcement on the main waffle site stating that it would be taking advantage of the 2x rewards. Every time the ghash.io jumps, waffle hash loses 20gh. Could be a single miner or could be proxying to ghash. I'm just going on observation and the announcement.
It's a Chinese group - they have posted on these forums as 'sfire' - that is moving the ~20GH/s back and forth. PoolWaffle disabled proxying to GHash as soon as they implemented the tiered bonus scheme.
@PoolWaffle: WafflePool's profitability does seem to consistently climb a bit whenever sfire leaves. Is this really just due to luck? Seems weird to me.
No, it is basic economic. Less dumping of coins on market at once = higher price per coin for the rest of us.