I believe it had more do to with us knowing the biases. We knew the NW trend would continue until the bitter end. We knew the QPF could be cut to 60%. We knew if the EURO and GFS were different than ignore the GFS.
I mentioned in an earlier post that several model update have left us with a lot less trust in any one solution. There is a lot more weak and further south with some occasional stronger further north. The biases have become difficult to predict (though generally I think we are seeing more weaker and further south overall than we were ever used to).