As you are browsing the Resort Directory, you'll notice a "Compare" on the resort's details page (located in the bottom left of the screen). Tap an unlimited number of resorts that you would like to compare. When you're ready, just open the "Menu" and tap "Compare Resorts." You'll see a side by side comparison of the resorts you selected, comparing availability, amenities, and more.
Note: the resorts you compare within the app do not carry over to your account when viewing on your desktop or laptop.