This statement makes the most sense to me. Since staying at Days Inns and the like growing up, I've stayed at POR, AKL, the DS Wyndham, and the Dolphin multiple times (SPG member). Yes, the atmosphere at POR was nice, but the room paled in comparison to the non-Disney standard rooms. I remember it feeling very tight and "skimpy", if that makes any sense, and I was just with my girlfriend. AKL was very nice, which is well known, but I'm not sure it was really worth the price, considering I could go explore and/or eat there if I really wanted to without a room. A memory that stands out from both POR and AKL was that it was not fun waiting for the buses, AKL in particular. Of course I don't know the particulars of your situation, but if I could stay at DS Wyndham and save $1,300, to me that's a no-brainer.
I'll add that I'm a fan of the Dolphin. You're on property and basically in the "bubble", you have Disney transportation, there's a Disney shop, the theming is larger than life, FP+, ADR, walk to EPCOT or DHS...pretty much everything except for mouse ears on my soap (do they do that?
), I can't open my door with a magic band and I forget if you can send stuff back to your room or not, but how essential are those kind of things anyway? We use points and stay for free, but the rates I've seen are very reasonable.