Hopefully these are bugs impacting performance that will be rectified. We are due a Google play services upgrade any day and there is some talk about a cellular bug that me be impacting 5.0
http://www.reddit.com/r/Android/comments/2mz5aa/lollipop_battery_drain_is_caused_by_mobile_radio/
Not to beat on the note 4 vs n6 dead horse but the biggest difference is software not hardware, and early software is often patched.
this might be it. I forgot to put it on the charger last night. woke up in the middle of the night and noticed about 30% drop in battery while the phone was idle.
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