I thinkit will be 2-1 with 100 Thieves as the winner of the matchup.
Team Vitality is definetely a top EMEA team and fully capable of beating some Americas teams and Pacific teams but i think overall 100 Thieves has better players and firepower and more chemistry at this point in time.
The scoreline will be:
100T 13-10 VIT
VIT 13-9 100T
100T 13-11 VIT