It’s worth to note that the approach climb gradient on the Airbus FlySmart assumes a single engine go around as with both engines the minimum landing climb performance is never limiting. FCOM- Performance- Go Around - General.
I saw lots of crews unaware of that and briefed that in case of go around they will fly the EOSID... LOL.
I had the chance to do a single engine go around and landing during base flight ( other engine in idle power) on an A319 at 53T and it still climbs at 1500+ feet per minute.