I believe that both papers use the RCP8.5 scenario for their calculations. The RCP8.5, if true, would indeed result in severe flooding. RCP8.5, in my opinion, is a worse case scenario and not the most likely path. Sea level trends since 1996 have remained at or below the “Intermediate” NOAA projections for sea level rise so I suspect that RCP8.5 is not the best scenario to use here.