to look at the last list, you'd think albi had the hardest divisional draws, but he's not in the hard divisions, so it's a wrong conclusion. I don't quite follow the rationale behind subtracting owners wins from the total wins for their divisions because every owners wins are what makes it a hard division.
To put it another way... part of why dBKC's divisions are hard is because dBKC is in them. you can't subtract dBKC's wins from his divisional total and then conclude he has a below average difficulty division draw (15th). Summing all 5 division wins for every owner is a good way to look at degree of difficulty (the list where ash was at the top), but you shouldn't subtract each owner's wins from their divisional total (the list where albi is at the top).