320DRIVER:
The Airbus guidance at the following link states that a landing should be continued, even if it entails flying through a flock of birds, rather than go-around. Is Boeing guidance much different for such a situation?
The 737 is a different animal, and does not like to fly single engine at full flap. You need to do all sorts of heroic stuff involving speed, thrust, rudder, config and so on. In the 320 you just keep pointing at the runway and you let the autothrust cope while you stow the table (for 737 pilots - the 320 s/e landing config/speed is the same as 2 eng, no buttons to push and no loss of automation).
Sound like some SOPs for the old tractor are a bit scared of steering the pilots towards the sensible course of action.