I wonder if there's any value in a wider analysis of that trend.
So for visits to PNE: We lost, Boro drew, WBA won, with Bristol, Blades and Leeds yet to visit. Promotion contenders average 1.3 points at Deepdale.
Brentford: We drew, Bristol won, Boro won, Blades won, Leeds and WBA yet to visit. Promotion contenders average 2.5 points at Griffin Park.
I don't think the sample size is big enough to really conclude that Deepdale is a much harder place to go unfortunately.
Just saying I am glad they are in the "Done and Dusted" pile than the "Pending" folder. No game is easy in this division as we will find out at The New Den on Saturday.
Bah !

