Yes, it's early, but CN's shipping lane through Prince Rupert is one very fast distribution line going anywhere in North America with minimal, if any, inter-switching i.e. going on CNR from Rupert all the way to the Midwest, East Coast etc. CN's main card in their hand is keeping clear of the mess through Chicago and having better connections in the East and the South.
Having  E.Hunter Harrison taking the helm at CSX won't make a difference and it won't give CPR an advantage in the East. 
It will be interesting to watch and record traffic volume on the rail lines in BC this summer. The chickens - aka CP's dirty tricks - are coming home to roost.