I am not sure with labours that long - there may be someone on BellyBelly who has experienced both and can comment. It seems to me like trying to tell which is more painful - stubbing my toe on concrete or stubbing my toe on metal...both are pretty painful at the time.

For what it's worth, I had an 11 hour labour and 50minute labour, and I found the 50min labour far more intense, and the 11 hour labour easier. I imagine with a 36 hour labour, exhaustion would play a large part there too.

And just noting...you say your labour was unbearable, but it sounds like you bore it pretty well if you laboured without drugs. Good stuff.