Interesting chart and good observation, BarcaShow. It would be cool to see the last ten years, or the last 20, to see how the trends / correlations progress over longer periods
Yeah, this is definitely too small of a sample size to be able to justly say anything for sure. I am sure we can do some research to find out though, soccernet keeps pretty detailed past stats. It would take a little time and effort but using the league tables and the past results we can manufacture something more in depth.
I'll probably do it when I am staring at some textbook and nothing seems to want to stick to my memory
I personally can't take this into full consideration only because I have an itchy feeling that there are going to be some major (and I mean major) signings come the next transfer window, which would dramatically alter some the top title-contending teams if they were to happen