While your premise is technically correct, I can further keep on finding a solution to a problem which has no fixed solution. Is any attack plan the perfect attack plan or the right way? You will be right in your way and I in my. A-100s, Smerch, whatever. DF and counter battery fire, effects of assault forces on linear defences whatever. I can start a rejoinder by saying we have CBU-105s in ample supplies to take care of your HAT and LAT as also embedded armor, you will retort with Copperheads (those mothers are still effective) etc etc. Who knows how the battle will play out in one particular sector! But across the frontage? Seriously, if you think numbers in time don't matter, then it is difficult to appreciate the premise of Cold start.