It's his first ever event that qualifies as a "big event" on his stats page, he has below 10 maps played; whereas other players on C9 have hundreds of maps played at big events each. To make it even more intimidating, he's playing alongside 4 players that have won majors (with one of them being Flusha who is obviously one of the most accomplished csgo players in the game right now). Guy has to be playing with some serious nervouness going on without a doubt. When you consider all that, I feel like he's actually doing pretty solid.
Imagine being basically thrown into this from being a MDL experience player.