The cap imposed on the survivor income is what makes CPP different from every other pension plan.

It is offensive, especially for a pension plan that does not offer a particular;y attractive return for current contributors, for the survivor benefit to be cut off at the single person's maximum.  That cut off represents a confiscation that is completely unreasonable, both insofar as the pension calculation works, and also in light of all the other financial burdens suffered by the surviving spouse.

It's just another rip-off necessary to pay for the votes of front end front-end free-riders who were promised full pensions despite contributing for relatively short periods.  The Liberal government of Prime Minister Lester B. Pearson in 1965 first established the Canadian Pension Plan.  Surviving spouses are still paying for that promise.