Only 19 kills in a 43 min match? Yeah that's pretty balanced.
Now if he had something like 23 kills in a 25 min match that would be either unbalanced or a extremely good player.
So the stats of one game should prove otherwise?
That's a lot of nines.
and that score would had gone to worse.
So most likely a good game in lower elo where enemies don't use sweeper...
Unless you're about to post the WHOLE match up to prove me wrong.