We've stayed at several places on the World Passport Collection list: Marriott's Newport Coast Villas (where we are owners), Marriott's Custom House (Boston), Marriott's Manor Club at Ford's Colony (Willamsburg), Marriott's Maui Ocean Club (Kaanapali), Marriott's Kauai Beach Club and Marriott's Villas at Doral (Miami).
We didn't go through
DVC for for any of these stays, but they're on DVC's list. As a DVC owner who has stayed at OKW and BWV (and who has toured VWL and BCV), I would certainly rank the accommodations at these Marriott Vacation Club resorts in the same class as Disney Vacation Club. They're different. Marriott has fewer "fun touches" such as DVC's Fiestaware dishes or OKW's decorative milk botttles, but the furnishings, decor, quality, cleanliness, facilities, and landscaping are excellent.
It really comes down to how you want to use your DVC points. If you decide to visit the locations such as those I've listed, you can stay in terrific 1BR and/or 2BR condos using the DVC points that you've paid for anyway, plus a $75 fee. That's a good deal, especially if you're not going to one of the DVC resorts that year.
At Marriott's Desert Springs Villas in Palm Desert California, the nightly rate in March is $500 per night (or $450
AAA rate) for a 2BR condo. We haven't stayed there yet, but we plan to. By the time you add taxes, a 1-week stay would be around $3,500, even if you pay the AAA rate. That makes a DVC exchange a good value.