I believe you are correct. Only OKW has two queen beds in a studio. The other WDW DVC resorts have a queen bed and a pull out couch. If you look on the MS website under View resorts, select the resort you want, then select accommodations, it will tell you what each room type has in it.
E.g. at BWV:
Studio (sleeps 4)
Kitchenette with microwave, mini-refrigerator, wet bar and coffee maker
Queen-size bed
Double-size sleeper sofa
TV
Private porch or balcony
Whoops, sorry I just noticed that you are renting points. Check on DVCNews.com under DVC Resorts, select the resort you want, and then select Guest Room Inventory. That has the same information.
some of their dedicated 2BRs have 2 queens in the second BR (dedicated means that the 2BR doesn't break down into a studio+1BR) but i've never heard of a studio at SSR with 2 queens.