i am not saying that he is not a competant warrior but he doesn't mind his power. I mean He is the polar opposite of Revan and Exile.
Yet Revan and Exile are polar opposites in a way. Vrook, Exile, and Revan are not weak individuals but they use their power in different ways.
But Stupidity gotten Vrook killed due to his own fears. Both Kotors deals with Individuals in facing their fears and become stronger. And Vrook didn't face his fears within the Exile and gotten himself killed due to Kreia.
Vrook, in my opinion, was stronger emotionial in Kotor 1 concerning Revan than he was with the Exile in Kotor 2.
IF he would have explain himself to the Exile about Kreia and Revan and deal with the force wounds of Exile, then he would probaly surived.
I do think that when Jedi Councils meet I do think IQ drops.