And xbox controller is not even that bad, I have for the ps3 and the original ps3 controller is even worse were the d-pad is to the left of the left analog.
I am about 90% sure, I purposely just tested the rucking tactics out and this is what I found. If you pick the right rucking tactic for the correct rucking situation, HB can correct me, but it seems like your aggression meter goes much quicker up, so much so that if you are not carefull you will infringe
but yes typically if you go out wide and isolate yourself you want to (first to player to ruck), if you ram it up the middle then (fowards rucking is better) unless of course you happen to break a few tackles and get two ahead of your fowards, then you would want to use balance, and thats where a different button combo for rucking tactics would be handy for on the fly changes if you feel you need to change the tactic on the fly, I have gotten a little used to the 3rd party controller in which the d-pad is closer to my right hand and I can change the tactic with my right hand while still controlling the left analog, but it would be better if it was assigned to either left L3 analog press down or shoulder button combo even better.
Cheers and Salud