Yup, this isn’t as impressive as it sounds like.
I was at gamescome too and played 3 matches of monster. I didn’t even get scratched by the hunters. I got to stage 3, got myself a handy perk and went looking for the hunters. They often had a strike or two from the wildlife!
Even if he faced a good team in those 17 matches, it was incredibly hard to communicate due to all the noise near the booth. When I played hunter, all I was able to shout was: FOLLOW ME! or MOBILE ARENA NOW! and then then they didn’t hear me half the time.
What’s more impressive is how he was able to play 19 times at Gamescom. The line was waaaay too long to be able to play that many matches. And even VIP’s were only allowed to play 1, maybe two matches per booth.