Had they won this tournament, it would not have been a fluke, as in this hypothetical they've proven that they can be constant winners. 2nd/3rd place is not winning, the definition of winning according to Merriam Webster is:
Definition of winning (Entry 1 of 2)
1: the act of one that wins : VICTORY
The definition of victory
1: the overcoming of an enemy or antagonist
2: achievement of mastery or success in a struggle or endeavor against odds or difficulties
They did not overcome the enemy, sure they won some matches but if a team goes to the NBA finals and loses you won't call them winners. Look at 2016 golden state warriors, best record of all time going 73-9, were up 3-1 in the finals and ended up losing to the Cavaliers. Who is the winner, the warriors or the cavs? Same concept here, Optic are not winners.