Questions about counter formations, arrows, attack commands...etc

So the counter formations spreadsheet is indeed helpful, but obviously there are many other variables that need to be considered like each players attack/defense (arrows) and overall team attack commands. If i'm playing against a 4-4-1 and my counter formation is a 4-5-1 butterfly, do you play that as a overall team defense or attack? Do I run forced counter attacks and/or the trap?

Is there any other special instructions out there regarding this I need to consider or is it all just trial and error?