Really Allan? OK, whatever, you are right, but I will continue to put much more faith in literature actually published by geographers and other earth scientists.
PS I love how you completely downplay anything to do with the ocean and the massive canyon and valley systems along the #1 and #3, while overplaying the badland river valleys in Alberta.
If those are considered massive deep valleys, then the valleys in BC must have blown your mind
And there is much more to BC than the areas you have listed, again, such as the Peace River area, the Chilcotin grasslands, the Fraser Canyon north of Lillooet (by far the most impressive Canyon system in southern BC but rarely seen by people), The Cariboo plateau, etc...
And with the ocean, you do get many geographical features, such as fiords, inlets, long beaches, massive river deltas, Island chains, etc... all which are not in Alberta.
But whatever