I'm not sure either. I know personally this is the toughest league I've had, and I always start with a 5* team that becomes 6* as the league goes on. For example, from memory 12 out of 14 teams (including me) started with pretty much 5*+ teams this season, which is ridiculously strong. However I feel it still comes down to chance and position from the previous season?
Who knows.
These are the teams In my league
The new league draw system-screen-shot-2015-06-13-9.01.21-am.jpg
The new league draw system-screen-shot-2015-06-13-9.01.45-am.jpg
The new league draw system-screen-shot-2015-06-13-9.02.05-am.jpg

And this is my league table and me, just to prove they're not random teams

The new league draw system-screen-shot-2015-06-13-9.03.55-am.jpg
The new league draw system-screen-shot-2015-06-13-9.04.06-am.jpg

Maybe you could be on to something?