Nothing in the pilot notes about maneuvering load limits. The A-20 is the ATTACK version, I'm guessing DB-7 is DOUGLAS BOMBER, and the P-70 is the PURSUIT aka FIGHTER version. Our A-20 is a bomber that can be legitimately flown as a fighter.
You could say an A-20(P-70) to a P-38 is like a P-47 to a P-40.

BTW 40% of 180 degree bank is 72 degrees. The Zeno's video says you should avoid bank angles over 75 degrees. I'm guessing that instruction refers to fully loaded bombers.