I had 17 and so I won more than would be expected---1 would be chance and 3 is what I got--and I more than doubled my money since the leagues I won were the bigger money leagues I cared about and lost in the crappier leagues I didn't.
As a side note, I cannot believe the badness of your team in a 10 man league. You won with that garbage? I had a better team than that in one of my 18 team leagues. If you want to be chest out about it, you should not be able to post here if you play in free leagues full of newbs either.
Since someone else listed stats on their teams that made the playoffs I'll add that as well: I made the playoffs in 12 of 17 leagues (70%), in leagues where only 25% of teams made the playoffs on average.