These are a bit older and if I remember the ones for HKS/WWS were harder to find (perhaps more dubious?). However, the median verbals for each were mid-160s which is where one would expect. I see a place like WWS having a more holistic approach as fenderpete suggests while a place like SAIS having more emphasis on GRE quant scores. Ultimately, its policy and not engineering so medians around 75th-80th percentile or a tad lower aren't that shocking especially with the other presumed strengths of other parts of the application.