tbh sentinels won at Iceland because none of the teams were good there except Fnatic
Iceland were what it was because of the recent drastic meta changes. All of a sudden teams was forced to play astra and viper and some of the teams decided to stick to their comfort picks. And it didn't work.
So however overrated u believe SEN to be, props to them for adapting new meta faster and being individually better than most of the teams at Iceland