Not really surprising, just a tad higher than I thought it would open. Almost all lines open about the same as KP and KP has this at -15.5 from my calc's without the pay site. Vegas uses a similar ranking system for opening lines from what I understand
Not to say there is not value in going below as some are thinking. and has obviously happened. But Vegas does not want to veer off their ranking system in opening lines. Heard some guy explain it on the radio once -- it was logical, yet somewhat counterintuitive. One sleep and it was gone from my memory, so I cant attempt to explain it.