I don't think this test is trustworthy, not to say completely useless. Poolside average hashrate - such as can be determined from the pool I was using, as it does not provide a simple moving average graph - was roughly the same as what hsrminer reported, but the actual amount of TZC that I earned was substantially less than predicted by minethecoin.com using hsrminer's reported hashrate and the average difficulty for the last 24 hours.
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You will never get the coins whattomine says because the difficulty changes literally every block. The only way to measure which miner you should be using is mining for an extended period of time and taking a look at both the shares submitted at the pool and the hashrate reported at the pool. You can never look at the coins earned because of the difficulty variable and you can never say I made 50 coins today with CCMiner and 75coins the day before with HSRMiner, because that tells you nothing since the difficulty determines coins earned.
I just finished a 7 hour test with CCMiner mining TZC and confirmed the hashrate and shares submitted are lower than Hsrminer. The miner reports about 100-200 kh/s less than hsrminer per card on the miner itself and that's the result I was seeing in shares submitted and hashrate on the pool itself. I was skeptical, but after this test I can't really dispute the reported rates. I will say my hashrate with one card is higher than when I have a bunch of them running. I have this same problem with all miners though..
Sorry, I meant to write that the site I used for average difficulty was minethecoin.com, not whattomine.com. I just concluded a full 24 hour test of hsrminer after doing a 24 hour test of ccminer which was preceded by a ~5 hour test of hsrminer, etc., and the results are not pretty; see post above this one.
EDIT - actually, I did refer to minethecoin and not whattomine in the post you referenced, so whatchootalkinboutwillis?