This would be an interesting study and go along way towards understanding why some Marriott's go all in and others grudgingly provide the bare minimum.

Only 14% are managed (in NA) according to the 10-K? I bet most of those are FS and above which would kick up the percentage dramatically where the benefits really count. Nationwide, I'd peg my good vs bad rate at about 50%.

But without having a list of managed properties its going to be hard to correlate who is what.