First of all, in the mean the WPO was very positive last season...that can't be dismissed. Secondly, the NAO was very positive througout February....thirdly, even during any brief instances during which the WPO and NAO were favorable, the PNA ridge was OFF of the west coast. Sorry, that wouldn't work in 1925, either.
2013-2014 had a vastly different Western Pacific...very +WPO. Now, that maybe linked to the strong Pac jet, so maybe we aren't in as stark disagreement as it may appear.
PS: Thanks for the link!