As far as I have seen there is nothing wrong with the stat calculation and, as you have only given less than half of the information, there is no reason to change my opinion which I am giving you as feedback . With all of the information it may be possible to explain why what you are seeing as a problem is not actually a problem.
Changing something because you don't understand it or want to understand it is not the right answer.
BTW it's hard to "look at everything" as you say, when a good chunk of the information isn't there.