4GB of bloat above and beyond vanilla Android??? In a mobile OS like Android, that's a lot of bloat when you figure the average large app (not including games) is still near or under 25MB. That's about 160 apps at 25MB each!
Its not just bloat (apps) but OS (ROM) itself takes up more memory once the manufacturers start to add their proprietary "skins" to vanilla Android. Think of the extra features like Multi-Window and Smart Stay. That stuff takes up space, and the stock ROM is pretty huge (over 1 GB, I believe).
Not to mention, Sammy probaby reserves a chunk more on the ROM partition, in case they want to add more features on future updates.
Its very much the same on HTC devices, as well. On my One X, its also got 16 GB of memory, but only 9.93 GB available as storage.
Anyway, it kind of sucks. If they are going to eat up that much space with sheet they should make it with 24GB of storage so that when they sell a 16GB device it actually has 16GB!!! Ah well...I'm just bitching now.
It would be nice if they actually reported the "user accessible storage" amount, like saying "16 GB memory, with 10 GB user accessible". Since saying how much memory the device has, without telling us how much of it is sucked up by the OS, is kinda useless information.
It would have also been nice, if they had offered a 32 GB version in the US.