The general idea is that a team which will finish - last night (the avg of 14 higher q players with contract or not)
... 6* near to 7* (110-120%) in a +1 lv Cup or CH.L.
... 5* to 6* (100%) depends from the LV , the server and luck
... less than 5* ( 80% <) in an easy league and a same/-1 lv in Cup/ CH.L.

Above aren't strict but very possible (for a normal lv, not in the top of the server).