Softwood Soft Ruling

Are these WTO rulings in favour of Canada over the softwood lumber dispute even worth anything anymore? In the past several years, almost 99% of stories I've read about rulings have gone in Canada's favour. Yet, the deal being brought to the table by the US is that they get to keep $1 billion in tariffs that they took illegally from us and we STILL have to impose duties on our own lumber, even though in NAFTA and WTO rulings, we were never in the wrong.

How effective can the WTO be if nations bound to their rules can just flagrantly disregards them?