Niceness.
That's a pretty high W$WSF% for fullring. Especially since you're looser than most. Standard? Explanation?
I don't imagine you're getting all that from cbetting and multibarreling. That would be quite hard and very swingy. Especially since you'll get looked up lighter. Are you stealing a lot of limped pots or from the blinds or something?
Or maybe you can get that by cbetting a lot. I did have a 20k 4ptbb stretch at 100nl as a 24/20 with about a 38% WSF, I think. But eh, variance.