Thats a good approach. But one flaw I see is that it was an alt bull market so alt-coins would have performed much better compared to bitcoin or the top 3-4 coins. If there is a way you could factor in that as well then it would be a great analysis.

He spotten the altcoin bull run and milked the maximum out of it. Once he got popular the hysteria could have added to the pumping effect he had by posting about an altcoin.

However this has highlighted the governance issue in Steemit. Next couple of days will be interesting and I would like to see how these issues are sorted out.