Loli Dolly

Not that im there yet but is it possible the ET3 is to the GC9 as GC3 is to A9? Like i said though, im not there so im not going to pretend to act like i know what is going on here but i recently have been able to roll to GC3 from A9 but i am holding off till i know i can go to GC6 at the very least cause I have been told time and time again there is no difference between GC3 and A9 and very possibly can produce lower DPS at GC3 than A9. So im wondering if the same goes for ET3 vs GC9?