Actually you are missing the point - which it does in fact prove that for top teams, playing in the EL doesn't hinder them, though it doesn't help them kick on either. Look at the changes for only what we would call top teams (City, Liverpool, & Spurs) the net for them is Zero, so basically no affect at all. In fact bar Spurs' poor performance in 2007/8 it would have been a clear net gain. In fact looking at individual teams (again only City, Liverpool and Spurs) in five seasons the teams gained and only lost ground in three.