It's correct. Canada includes spouses in the comparison, like you say, but with far less weighting than the principal applicant.
Usually the numbers don't work out to penalize the couple for the less qualified spouse in all but the most extreme Canadian immigration examples. A spouse having the opposite impact (helping the numbers) is far more common.
Under Trump's proposal, having a modestly less qualified spouse would hurt the principal applicant, unlike the normal Canadian immigration outcome.
I should note that the link you gave is not the points system used for approval, just the one that affects who can apply when, using certain of the many application pathways. A different points system is used for approval.
Source: immigrated to Canada myself. I don't have a spouse but I had reason to study the rules closely.