If you can find the first LMU game postgame interview with KC, Wrubell and Durrent you can judge for yourself. i heard it live but can't relocate the 1/21/16 podcast (i'm pretty sure that was the interview in question).

The comment in question was in response to: ""How do you get all of those triple doubles?"

Collinworth responded by explaining that his triple doubles start with being the "best defensive rebounding PG." In other words, he said: "i can get it done because i focus on being a good service oriented PG who rebounds/steals on the defensive end better than any other PG and gets it down court."

Again, Collinsworth was simply trying to say his advantage is being a PG who gets defensive rebounds/steals and that enables him to bring
the ball down court quickly and hit an open teammate, and that is how he gets triple doubles; i.e. it is rare for a good passing PG to also be a great defensive rebounder. So that combination of his skills, and he emphasized having teammates who can hit their shots, answers the question which was posed to him: "How do you get all of those triple doubles?"

The question wasn't about his defense.

That is the whole of what he said/meant to the question in that interview as a close listening to the replay tells us.

He was exhausted immediately after the game and it didn't come out clearly. He fumbled his words a bit, tried to correct himself, and obviously was misconstrued. That was his failure to articulate. Linton helped botch the thing up during the Pacific game. But that's on Linton,, not on KC.

KC said/meant "best defensive rebounding PG" to get the ball down court quickly. He did not respond to the question about triple/doubles by asserting that he was the nation's best defender.

Collinsworth has no history of talking like a deluded braggart, the way he is being caricatured here; seems a little unfair to frame it that way.