I honestly haven’t used it in a long time.. i actually found it in the street. Somebody lost a tool bag off their truck, and i had some other dewalt 12v stuff.. I’ll say this - i do like the smaller grips of the dewalt stuff compared to Milwaukee.
Your best bet is to probably watch some comparison vids on YouTube.. i dont have the fuel screwdriver to compare to my brushed model. If you already have the m12 fuel, getting the dewalt will be just like getting the m12 brushed version (power wise).. find a vid comparing the m12 and m12 fuel, that should give you a difference in the idea of power..
Like I said though - you may wann consider the m4.. its not meant to drive 3” screws like the bigger ones...