Does counter damage double with dual guns with bullets or something?

266(being the minimum damage with Iron Maces) x 2(being 200% from Rank 1 Giant Counter, not including the 200% from the Rabbit because I don't know its damage range and besides it's probably too low to be significant)=532 Damage no Crit.

With Critical Hit it's 532 x 1.5 (am I doing it right?) = 798 Crit

Now with the Guns I have 306 Min Damage so 306 x 2 (under normal circumstances) should be 612 Counter damage. With the Max damage it's 446 x 2 and that's 892 Damage which is clearly not the maximum damage I did with Counter as I did 1091 without Critical with my guns.

Critical damage from countering is based off the enemy's crit rate on you, also their skill rank of critical hit is what goes into the formula, not yours iirc. By looking at counter's discussion page, it seems i am confused again, screw you counter for confusing me.