Just curious, why is the risk of being reported lower at land border vs airport?
To add to that great response, I suspect the reason that PRTD refusal rates are higher is because it's done by desk officers at IRCC who specialize in looking at this and have an unlimited amount of time to make a decision after considering all factors.I was comparing at land border vs applying for a PRTD. Airport not relevant* because those who need a PRTD cannot board a plane (that's why they need the PRTD). PRTD refusal rates seem MUCH higher than at land border.
*There is a case of those PRs who can fly even if no valid PR card: US citizen-PRs. For them the likelihood of being reported at airport is comparable to land border, as far as I'm aware. But I was focussing on the other PR case, those who need PR card to board a plane to come to Canada.
When a CBSA officer makes the call at the border, it's done by someone who has other responsibilities at that port of entry, and you are held up at that port of entry until a decision is made either way - so they shouldn't be considered as having an unlimited amount of time to decide.
Also important is that the PRTD grants a somewhat stronger status - sometimes you can use it to re-enter multiple times and in support of renewing a PR card. On the other hand, the CBSA is just deciding whether or not to let you in the one time, and even if that does go your way, that wouldn't ever provide support for getting a PR card or re-entering in the future (short of you actually waiting and living in Canada until meeting RO again). So when the CBSA makes the call, one way to view it is that less may be at stake, at least from a bureaucratic point of view.