yes it is. lemme put some description to my previous comments.
i am currently using ItemStat mod (best mod IMO) to multiply 10x of my current stat (Atk, Def, HP, etc).
i took initiate to switch my default legit weapons with crappy one, (for example i switch my legit 10000 atk weapons to 1000 atk crappy weapons), it will be automatically multiplied to 10x on mod.
so, the Atk stat on my current hero is nearly as the legit client one.
to prevent the statistic anomalies, i avoid to use my Atk's multiplier advantage which could multiply my DPS 10x greater than legit one.
i just using the Def and HP's multiplier advantages on ItemStat mod.
even with no skill in dungeons, my team could survive till it finish just by regular attacks.
my rule is simple, never finish stages that you couldn't finish it by normal (no mod).
take it as a "benefit", not for "abuse".