Quite possibly not. In fact, you're the one who grouped IHG and Marriott together. In my mind, even though I'm a member of Marriott, their PointSavers, maxing out at 33% off, is too feeble for me to bother looking it up. I'm not going to go out of my way for that.

So to me it's only IHG's PointBreaks, which is 5000 points per night no matter how much the hotel is normally, that is worth driving a bit out of my way to stay virtually free (ie, not just on points, but on a trivially small number of points). So even though I'm more active in Marriott's program from an earning point, the PointBreaks list at IHG is the only list of its type that I bother looking at when it comes out.

Even though it's not a list, the Choice "redemption sale" is the second best IMHO, because it can take European hotels that might be 25k a night down to 8k a night. Again, that's significant.

Club Carlson savings on award stays are not based on any list, but on knowing that two-nights stays only cost one night (if you hold any of the Club Carlson credit cards from US Bank, including the one with no annual fee). So that's 50% off if you can make all your award stays with them exactly 2 nights, at any hotel in the Club Carlson program.

So different hotel programs have different ways of saving on award stays, and a list only works for a couple of them probably.