Wrangler = more fun
FJC = more practical
Statistically the FJ should be more reliable. FJ is at least somewhat more practical. FJ is faster. FJ pretty good offroad, but not as good as a Rubicon.
Wrangler is more fun––removable top/doors. Wrangler will probably be less reliable than an FJ. Wrangler is slower than FJ. Gotta spend the money on a Rubicon (don't want to be driving the same Jeep as your neighbor's teenage daughter....
)
My take - if you have the money to burn and want to drive around w/o doors, go buy the Jeep. If you don't have the money to burn, or decide you don't really care, keep the FJ. Both vehicles will get the job done (i.e. getting you where you need to go). If you have the money, just buy what you want.
In ten years, it won't matter if you drove a Wrangler or an FJC. I have no idea why people get so worked up over this question (or FJCs generally)––it's just Land Cruiser Prado / Lexus GX / 4Runner underpinnings with a "unique" and/or ugly body on top.
Disclaimer - FJ owner here.