I have noticed this same issue with my Galaxy S3 phone, (and not on my Nexus10 tablet), when the app uses a fixed landscape orientation, but adding the one line in the manifest editor did not fix the issue in my case.
By carefully watching what is happening on the screen and in the Log when the GS3 goes to sleep and wakes up, I have noticed that when the device goes to sleep, the "Pause, UserClosed = false" occurs first just after the screen goes dark, then about 3 to 4 seconds later, the "Create" and "Resume" occur, but the screen is dark so nothing is actually seen.
When the device is revived and Resumed, I do notice that the screen does a quick rotation from portrait to landscape (this does not happen on the Nexus), and we know that the Activity Cycle goes through another Pause, Create, and Resume for a screen orientation change.
So, for the GS3, I believe that when the screen goes dark, there is a screen orientation change from landscape to portrait that occurs after the screen is already dark, (note that it is still a Pause, Create, Resume sequence) which then requires the orientation to change back to landscape after the device is revived and the App is Resumed.
That all being said, is it known why there is a difference? Both devices are running Android KitKat V4.4.2. I did first notice this issue when I was working on my fairly large game app, but I then made a very simple App that only puts one label on the screen, and it still does the same thing, so it doesn't seem like it should be a memory issue.