From the T&Cs:
The Best Rates Guarantee DOES NOT APPLY to the following:
Special 'member only' rates available to members of special programs or associations (i.e. AAA, senior and government employee discounts),
Special "exclusive offers" or "online coupons" offered by third party websites
Group rates,
Corporate rates,
Wholesale rates,
Affinity/association rates,
Package rates that include the room and other components such as meals, amenities and entertainment.
Rates found on opaque or auction sites where the hotel brand and/or the specific hotel is not known until booking is finalized. Examples of these types of sites include but are not limited to Priceline and Hotwire.
Any other unpublished or private rates,
Rates based on reservations made within 48 hours of the hotel arrival date.
So that means the great Radisson rate I found on another website including breakfast AND at a vastly cheaper price is ineligible for the BORG? What a joke of a programme. SPG doesn't have a problem with that kind of match.