Does shop runner do anything else for this?
Nope, I don't think shoprunner is valid for preorders. I also noticed shoprunner doesn't always use 2-day shipping btw. My last 2 orders via shoprunner were shipped by UPS ground lol. I guess they think it'll still get their in 2 days with ground, so they use the cheaper shipping option.. but in my experience it doesn't work out like that. Same with newegg's 3 day shipping, they use UPS ground for that which sometimes takes longer than 3 days.
Shop Runner may not be that useful on this item anyway, considering they don't always use 2 day shipping and you already get a free shipping option without it.