The only reason I posted my blog address was that I could not post charts in this one. I will check yours out because I am always looking for new information to study.
You are right about the zero sum in ETF’s but the winning side can be a very nice place to be if you are on it. My favorite aspect of trading is exactly that, the rewards for being the winner are substantial.
If it were not a zero sum game it would not be worth doing, IMO.