DW thinks Portofino Bay is better than any WDW resort. (I'm still partial to Animal Kingdom Lodge.) If it were a Disney hotel, pixie dusters would rant that Portofino is the best hotel ever.
Haven't been to the Ritz but the Waldorf at Bonnet Creek is, well, a Waldorf. Of course Disney can't compete with a true luxury hotel that's essentially located on its property. And starting at under $200/night. The Waldorf Astoria can do everything right for $200/night but WDW can't fix the defining feature at the Polynesian for $600/night? They must be saving up to fix the Yeti.
Wyndham Bonnet Creek is an interesting beast. I can get a very nice 2-bedroom villa from WDW for about $1000/night or a good but nothing special (except location) large 2-bedroom villa at Wyndham Bonnet Creek for about $100/night. Or I can stay in WDW's "Motel 6" Art of Animation "suite" for $350/night.