Largely due to this thread I flew the B5N2 on a couple missions last night, striking towns.
First mission the town had been hit and my 250kg bomb only got four buildings. I was intercepted by a P-47M before I reached my second target. He got a pilot wound on me in the first pass, I dodged the second, but came out of a wound induced blackout just in time to see him in position behind me. 1.6 perk points.
Second flight I took a Ju87D-3 with an 1800kg bomb. I was intercepted short of the target by a Ki-84 who inflicted a pilot wound on his first pass. I was still short of the base, made a desperate attempt to reach bombing range and tried to fling the bomb towards the hangars I was lined up on as I slid into a wound induced blackout. Ki-84 shot me down while blacked out. 0 perk points.
Third flight I took a B5N2 up to 20,000ft, where it is VERY unhappy; my climb rate had dropped to 300ft/min. I bombed a Knit town, inflicting light damage and proceeded to a second town, where I decided to use my two remaining bombs. Damage was heavier, but I was over focused on the target and was shot down by an F4U immediately after the bombs hit. 14 perk points.
A bit frustrated I decided to take up a formation of G4M1s and good gods but the G4M1 felt like a wonder of capability after the B5N2 and Ju87D-3 flights, climbing much faster, flying much faster and at least having the 20mm tail gun. In the event I was, however, not intercepted. Bombed four town centers and landed with 40 minutes of fuel remaining. 71 perk points.
You really wouldn't think anything would make you appreciate the G4M1, but it really is possible.