Did you really read table 3?

Per output organic vs conventional:

   Energy use 15–21% lower a,b
   Nitrous oxide emissions 8% higher a
   GHG emissions 0–10% lower a,b,c
   GHG emissions of organic diet equal to conventional diet d

One 2012 paper (I did not track it) says nitrous oxide higher 8% but GHG less up to 10% or identical, so less air pollution overall.

For reference Nitrous oxide is around 7% of all GHG in the USA, so the +8% by 70% by 7% doesn't amount to much vs 0-10% when you add up, source: https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emis...