A significant portion of the memory is used to support the high resolution display rather than for bloat ware. I'm using a Nexus 10 with the same screen resolution and have seen the same complaints. As Android uses a very different memory model than MS-Windows, managing memory much better, it would be better to judge memory deficiency by the lag caused by Android having to reload apps it removed from memory due to low memory.
Basically with Android unused memory is wasted memory.
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