Is Hooper, and not Quint, the real maniac onboard?

Hooper was protrayed like a spoiled rich kid which didnt care a lot of anything else then himself. Like for example when he risked the live of Brody just to get a scale for a picture. OR how he treated Brody as a cluesless guy from workign class.

Quint, on the other side, had this grumpy appearance, but his actions were well thought (at least til his past recaptured him and it was only his fight against the monster (of the past and present). He showed Brody how do knots. He understodd that Brody was a newbie onboard and realized that. He had reason for everything he commanded (when Hooper acted like a stubron 5yer old child most times) or did by himself. He had an overview about all the situation. Yes, he destroyed the communications, but that when his mind already went south ;) . But before that point Quint wqs the smarter and more likeable character then Hooper.

So was this either done purposely by Spielberg. Or was it only/also sourced by the amazing play of Robert Shaw? Or do I misinterpret something at this two characters?

Its also interesting how Brody never became part of the community at the famous Indianapolis scene. He tried to part of the speech, when he showed for a moment an old wound. But then he stopped again.