Earlier quoted context omitted.
Well, technically I did say "has best options", not "the kebab quality median is great". I now live in Malmö, which has a much higher number of people from Middle-Eastern countries, so their cuisine is also a lot better than what you can get in Stockholm. However, since I've also become vegetarian in the intervening years I could not tell you what the local quality of the kebab is. Falafel is pretty passable though.…
"Least disappointing experience" is how I would put the better kebab places in Berlin! Shawarma in Tel Aviv is not exactly the same but similar and so much better (of course there's a lot of variability in quality there too, and it costs something like 2-3x as much as kebabs in Berlin). I'm sure you can also get amazing specimen in Arab countries and in Turkey (I don't have first hand experience there).
This is frankly odd, given that for most cuisines I can point at some other place surpassing the original. The best Italian food I've had has been in Chicago, the best Mexican food I've had is in San Diego. You can find extremely good authentic Chinese food in the Bay Area if you know where to look, but I can't say I've covered enough of China to confidently decide a winner there.