Trips include crude to distillate, between and among the major refineries on the east coast, under all weather conditions and with a 1/4 million bpd of oil production Newfoundland offshore thrown in.  The magnitude of hydrocarbon marine transport including offshore oil output dwarfs anything on the west coast, even after KM expansion. That, in a nutshell, is my point and it is irrefutable. 

Your point,  "Nobody in BC is taking issue with the 1200 or so tanker trips in coastal BC importing and distributing refined fuels". What?  It's clear you do not reside here.  To wit, the recent serious leakage of diesel and lubricant from the submerged tug Nathan E. Stewart near Bella Bella.  Almost everyone is taking issue with refined transport and so they should. Why? Because in fact the loading standards, safety mechanisms and ship characteristics of ocean going tankers in/out of vancouver is vasty superior to those shipping refined fuels.