These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Harsher in Hindsight: The scene where Brody dangles from the power line is a bit scarier now that it's recognized that great white sharks can jump entirely out of the water. If it hadn't been distracted by the boats, it could've snatched him right out from under that cable.
The Scrappy: JACKIE. The otherwise exciting ending of the movie is marred by her deafening screaming, and you will quickly find yourself rooting for her to be eaten. She lives.
Sequelitis: While not as great as the first film, Jaws 2 is still critically the most successful of the sequels.
So Okay, It's Average: The general consensus for the film. Not publicly adored like the original, but not as widely hated as 3 or especially The Revenge. A factor that likely helps is it's the only sequel that Roy Scheider came back for and his performance is enough to help it be considered watchable compared to the future installments.
Special Effects Failure: At one point the shark charges a boat and its rubber face is noticeably dented by the impact.
In defense, shark skin is cartilage. At this point, the creature was getting some serious damage on it.
Strawman Has a Point: When the town council again wants to ignore evidence of a shark problem, for the same reasons as in the first film, but are completely right in their decision to fire Brody over his extremely reckless actions on the beach—screaming at people, firing his gun—that could have left someone seriously injured or even dead. Brody's lack of remorse for what he did doesn't help his cause much.
Also invoked in a deleted scene on the DVD: after Brody confronts the town council with the photo of the shark and the council goes back to deliberate, all but one person votes to dismiss Brody as the police chief—the mayor himself, who apparently saw the light, and defends Brody during the deliberation.