JE is one of the longest characters to farm.
I am currently the only droid team in the top 50, and I have only ever seen one other droid team in the top 100 when I was climbing the ranks. Been in tier 8 bracket (sometimes 7) for a while now. One would think Droids would be more popular if they were as easy to farm and gear like you said. This all goes back to my point of the lack of diversity that I have tried to emphasize. I agree that I counter numerous other combos hard, but I almost never see any other combos so it doesn't really mean so much lol.