Both of these comments elicit the same response from me...there are many types of guns out there...most give readings but not accurate readings. To get proper readings (I believe from what I have been told) you also need to use them in a tight set of parameters, the understanding that I have is the only true readings come from directly behind the catcher at a certain angle otherwise the readings can be considerably off. I would also highly doubt that a facility has two guns (Stalkers), that is quite an investment for one...so why two? The cheapest running about $599 and going up to $1150 or more.
Which facility are you at in KC, I am also in KC and my son was gunned at BTL on Saturday for the 82 mph he is a sophomore and the only higher numbers were turned in by a senior at 86. They were using one gun (improperly placed above and to the right of the catcher....those numbers on a Stalker Sport 2 gun were 75-76 on the fastball. On the Stalker Pro 2 set directly behind the catcher he was 82-83. So as you see the numbers can be considerably off depending on placement of the gun and possibly the gun too.