I will throw in these pros for SSR and I know it's not the most popular girl in the school, but....................
Not only do they have the zero entry pool, but they also have the little slide and the Donald Play area with popjets that little ones love.
I will assume with a 2 year old, you will have a stroller. SSR has great paths(as does VWL) and it would be easy to stroll through DTD where there are lots of hands on stimulating activities/sights and also a boat ride. Lots of pretty flowers too.
The Congress Park playground is great fun for little ones and is on a soft play area and not sand like VWL. Sand is good and Sand is bad. You know your 2 year old so you will have to decide.
Since you stated you will not have much park time, I would consider all the Resort activities. I personally would not take a 2 year old to Artist Point but that's an individual choice. And I wouldnt necessarily call Roaring Forks a Food Court but again.........

You will have room service at VWL so if that's important to you.
The parking at SSR will be closer to your unit also. We were at VWL 10 nights last December and then moved to SSR for 6 nights. We always rent a car. I really appreciated the parking at SSR although we really enjoyed our stay at VWL.
Yes, you hold a coveted ressie at VWL, but if that's the main reason you are keeping it, then you may regret it if it doesnt suit your planned activities for this stay.
Im in the same boat, as I am considering giving up half our sold out BCV studio next month to stay at SSR because the second half of our trip will be more DQ and Waterparks. I hate moving so we may stay put, but I have a feeling I will regret it when we are driving back and forth to DTD every day instead of a nice stroll.
SSR has DVD players, VWL has VCRs again if this is important to you.
Decisions, Decisions!