I think among winning players, meaning let's say 2bb/100 - I think limit clearly has more variance.
If it is a non-winning player all analysis goes out the window as it largely depends on the NL player's playing style. If they are calling of chips with second best hands but are passive = less variance than some LAG loser.

If I wanted/needed to make a living off poker - i.e. really needed to win to pay the rent and assume properly bankrolled but no reserve for living expenses - I would play NL as it would be much less stressful on a day to day basis.

So you believe that LHE has less variance that NL correct?