Impossible for others to answer with what info has been provided. How many people? Staying on-site or off? Kids? If so, what age (and height)? Any accessible guests? First timers or frequent visitors? Thrill seekers? Prone to motion sickness?
If it were me I'd lean AK. Yes, HS has slinky dog and rock-n-roller coaster which are some of our favorites but AK has flight pf passage and everest (also some favorites) but has the best show in any theme park right now in festival of the lion king. The best theme park table service option in tiffins. The best theme park lounge in nomad. The best theme park quick service option in satuli canteen. The best themed park land at the moment in pandora. And between the safari, rafiki's planet watch (when it reopens), festival and the lion king AND finding nemo the musical that eats up ALOT of your time throughout the day. So, if it were me, on my MK day I would get as much done as ai could and SKIP happily ever after from inside the park. Then, on my AK I would skip rivers of light and day hop over to the polynesian after AK closed and catch happily ever after from the beach.