Looking at the Eps more closely, there must be 2 camps wrt the storm threat because there are 2 slugs of moisture with a lull of 12-18hrs in between. That 72 hour period picks up both. Since there's only 1 storm, I think that makes the snowfall maps overstated/too high.
I say this after letting the 6hr precip maps loop. There's a precip peak around 198hrs then another around 222hrs.
By the way, even though it may seem like it, I'm not trying to poo-poo every threat. I am, however, trying to figure out exactly what the models are really telling us because so many times model misinterpretations are honestly made that leed to erroneous expectations. I know because I've made many.