Alien encounter was by far the scariest attraction ever and that was as sci fi as you can get. it was basically a medieval torture device, locked in a seat through your shoulders as a blood thirsty alien murders people around you. I mean the ride had simulated blood that would splatter on your face!!! Stitch is slightly below the level of AE but no kid should have to go through that, it's traumatising.
But back to topic, Kong has a lot more elements that can put it head and toes scarier than jaws. It's not only going to be only screens either. There will apparently be tons of animatronics and sets too. Jaws was more psychological than anything else, this is gonna be in your face scary. I mean the 2005 Kong is far from a walk in the park. Those natives are terrifying and what's worse than a giant shark? Giant bugs. I've seen grown man wimper over cockroaches and spiders, a giant one that's in your face will be sure to get a reaction out of the bravest souls. I consider the bug pit scene to be one of the eeriest, disgusting, scariest, horrifying and unrelenting scenes in film history. Talk about a watchable nightmare, the fact they are recreating that is....oh hell no lol. But yeah I think Kong will do just fine, 3D and so on