Gap change in latest month: 191,638 - DS
Gap change over last 12 months: 86,672 - Switch
This race is a marathon and not a sprint. DS has a lot of speed at this point, but Switch just needs to stay reasonably close, which you can see it's doing from the two numbers I copied above. DS is going to get a decent lead after its respective holiday, but that won't be a big factor in the long run. The bigger factor is legs over the next several years.