Not sure how exactly the note 2 is compared to the S3 that I had, but this isn't necessarily true. CM based roms have to reverse engineer the radio resulting in worse signal and data handoffs relative to touchwiz. As far as I know, there has never been a fully functioning touchwiz camera ported to CM. Correct me if I am wrong.
If you want better signal and camera, touchwiz is your only option. I've flashed dozens of CM based roms, and all have the similar data and csmera issues. Remember, your experience may vary, but this is all relative to touchwiz, which has the proprietary drivers.
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