That stat of the 3rd place finisher winning its semi 60% of the time is very interesting.
I'd guess the 4th v 5th semi will end up more like 53% v 47% over the long run.
All interesting stuff!
The gap between 3rd and 4th compared to the gap between 4th and 5th will be much bigger because 3rd place have much the easiest semi final.
Plus the nearer to mid table you get the more the teams are "much of a muchness".
So usually the gaps in ability between places gets narrower as you get...
The sample size is far too small to be significant as yet
Once we've played 500 years worth of play offs a meaningful pattern will emerge.
And the 3rd best team in the division will have won the play offs most often.