I did not use any credit card activity in the hotel comparisons.

Obviously that would influence the comparisons. That is an additional variable that could be used in any comparison, but not a necessary variable in my opinion.

I tried to reduce the variables to make a reasonable analysis. I used booking bonuses of 1,000 points per stay for Marriott, Hilton, and Intercontinental because over the course of a year I think that a member will average 1,000 points during the year for reservations. I used 500 points for Starwood. While there are periods when these programs don't offer booking bonuses there are other times they do and I think that the average of 1,000 points or 500 for Starwood works over the course of a year for 15 to 30 stays.
I didn't use a booking bonus for Hyatt because I haven't researched it well enough yet to know if that is a valid assumption for Hyatt.

Does Hyatt regularly offer booking bonuses for online reservations?

So my comparisons use points earned for hotel folio based on status and assume an average booking bonus is earned.

Any comparison without using platinum amenity points or booking bonuses leaves Starwood at a comparative disadvantage and is not typical of a member's actual Starpoint earnings since the 500 points for online reservations and the 500 points platinum amenity are a significant part of the Starwood earnings value.

A $100 folio for a Gold or Platinum SPG member would only be 300 points, but the booking bonus is typically 500 points, and for the Platinum member an additional 500 points is typically earned. 1,300 points for a $100 stay vs. using 300 points for a $100 stay is a huge factor in comparative analysis of overall award night cost.

Credit cards are like other partner activity and would not apply to all loyalty program members equally regardless of status, so a person would need to factor in their own card usage and other point earning partner activity for individualized comparisons.