it's not about A-move, but rather, how to fight with
Small, even fights: a few units against a few units of the same type (e.g a 4 spearmen vs 4 spearmen in dark age, when my opponent and I are both templar knight. All my spearmen died, but opponents dies zero.)
Large, mixed-army fights: big battles where both armies have several unit types and each side has counters to the other’s units. I gets wiped out completely under such situation.
My short cut,
F1: select all infantry
F2: select all ranger
F3: select all calvary
F4: select all siege
Q: select all infantry on the screen
E: select all ranger on the screen
F: select all calvary on the screen
C: select all siege on the screen
Z: select healer
A Attack-Move
average APM is around 120~140