I am having the exact same problem with one of my teams, i won against 1st and 5th, draw against 3rd, and lost against 2nd and 4th, all of this Team have better Q, the first 3 in league are more that 5Q higher.
But against the last 6 i only got draws or tangencial wins, and i have better Q, and most are abandoned.
I just give up, this week i am starting to sell the players that seems to not perform and i will buy New ones, since the auctions are very calm, do not whant to wait for the next season, since i will stay in same level, my players will keep the stars.
Next season hope it will be better.