The problem with that article and analysis -- they treat dues paid in the future as equivalent to the upfront cost.
Paying $100 now, and then $10 per year for the next 10 years, may add up to $200. But it's not the equivalent of paying $200 now. Particularly with maintenance, you need to actually correlate to the
point chart. OKW might appear to have very high annual dues -- over $8.30 for 2021, and Poly only has dues of $7.05..
So that appears to make Poly a better value... but... If your goal is 1 week in a studio for summer (for example)... At OKW you would only need 106 points for your annual trip. At Poly, you would need 167 points for that annual trip. So you'll pay more in annual dues with 167 Poly points than you'll pay with 106 OKW points.
Of course, if you use your Poly points to stay at OKW, then you are getting better value than someone who uses OKW points to stay at Poly.
Basically.. if you're never staying at your home resort, always bouncing around at the 7 month mark, then having the lowest possible maintenance fees and lowest contract price is important. But if you are primarily staying in your home resort, then the point chart becomes part of the value measurement. And this has both subjective and objective measurements. Some would say that the OKW has a better point chart, because rooms are cheaper. But cheaper rooms aren't necessarily a good thing.
Long winded way of saying that there is no clear cut way to truly calculate the "value" of these options.