again assuming you have 2 pairs of the same iems with the same equipment and the same burn in period yes.
but take into consideration that sound is subjective, so you have to take that into consideration
YES THIS CAN BE DONE!
BTG_Audio he can do it, ive had my se530 converted to removeable cable mod from him, excellent work and well worth the $45.00 he charges. lead times about 2 weeks, faster you can get the iems to him the better your turn around will be.
imo i dont think westone can do it, and i believe they would if they could do it, charge you much more than 45.00!
Highly possible you damaged a driver (maybe more) inside the 4R when you dropped it.