Why Air Pollution Control Is Important to Limit Global Warming Under 2 Degrees Celsius

A few people around me realize the importance of non-CO₂ greenhouse gases (GHGs; CH₄, N₂O, CFCs, HCFCs, HFCs, O₃) for climate change mitigation.
Fewer people around me realize the importance of non-GHG air pollutants (SO₂, NO_X (NO+NO₂), CO, BC (black carbon), organic carbon) for the same purpose.
An amazingly well-written analysis by scientists from Scripps Institution of Oceanography clarifies how important they are and enlightens the ignorant majority (including me).

In the analysis, the authors show that the atmospheric concentration of carbon dioxide equivalent (CO₂e; NOT CO₂) greenhouse gases must be stabilized at 441 ppm by 2100 to limit global warming under 2°C above the pre-industrial temperature.
To achieve that goal, they propose three imperatives.

1) Reduce 50% of CO₂ emissions by 2050 and 80% by 2100: However, it will NOT reduce the planetary GHG blanket thin enough within the 21st century due to the long lifetime of atmospheric CO₂ (100-1000 years).
2) Offset warming from the reduction of aerosol masking: Reduce emissions of two major air pollutants: black carbon (BC) and ozone (and its precursor gases such as NO_X, CO, and volatile organics (VOCs)).
3) Thin the GHG blanket: Reduce emissions of short-lived GHGs (methane and halofluorocarbons (HFCs)).

Then can I say that controlling air pollution is as important as reducing CO₂ emissions reduction?

Source: Ramanathan, V., & Xu, Y. (2010). The Copenhagen Accord for limiting global warming: Criteria, constraints, and available avenues. Proceedings of the National Academy of Sciences, 107(18), 8055-8062. Retrieved from http://dx.doi.org/10.1073/pnas.1002293107