The idea that a huge increase in the hashrate of any one given algo only affects the diff of that particular algo and thus magically levels the playing field is also ludicrous, unless, that is, there was a major undocumented change in the DigiSpeed update.
Wait a minute...are you saying that the hashrate of one algorithm affects the diff of other algorithms or are you saying that the fact that it doesn't doesn't level the playing field?
Please don't take this as unfounded criticism. My numbers suggest something very different from what you suggest, and I think that my analysis is quite rigourous and merits serious response - I'm asking for clarification and/or documentation so I can better understand; I am not attacking.
Your analysis may very well be rigorous, but I can't find your analysis - only your conclusions and a rough description of your sources. If you want a serious response, post your source data, the conclusions you derive from the source data, and any required logical steps that go beyond "basic math skills". I shouldn't have to re-do all your work just to have a conversation with you about the results.