I love your screenshot skills. The white area makes the screenshot even better!
No to be serious for a minute, if we add all the losses of the opposing team we'll get 6.
This means that you could have gained the other 7 kills in various ways.
Furthermore, we do not know how you gained the first 6 kills.
-You could have AFK killed someone
-You could have killed a new inexperienced player
-You could have flipped them
-You could have kill stolen them

So basically this screenshot says zero, and it's a mystery to me why you have posted it.