The 13-0 is flashy, but YEKINDAR's point about the B-site retakes matters more. If Vitality are still getting chances in those rounds and FURIA still come out ahead, that's usually a sign of good mid-round calls and better composure rather than just a hot streak. You can call that luck if you want, but CS has always had games where the better team on the day is also the team that gets the key breaks.