You're the 2nd guy this week posting numbers of 160-180kg on bb rows but that weight is blowing my mind so I have to ask this question.
Is your torso almost parallel to the floor when you bb row or are you up in the 45 degree range with sloppy form jerking/bouncing the weight up for cheat reps, almost like a shrug?
When I do bb rows my back is almost flat/parallel to the floor and my form is very strict to fully engage the lats with full ROM and peak contraction but 100kg for reps is quite challenging so 160-180 amazes me. My spine would literally snap using that weight with a flat back and strict form.