It is impossible to read this article with any real understanding without seeing the survey.

For example, do Canadians compare trade with China, and, for example, its human rights record, with trade with the US, and , for example its record of killing people with drones? Or, more likely I would guess, Canadians, simply because history, tend to see current trade patterns (i.e. with Western nations) as moral and beneficial (they are not, or are not necessarily), and are fearful of unknown trade patterns with countries that are seen as Other (e.g. Asian countries).