What comparative ad? When comparison is not so
Comparative advertising is not allowed in Lebanon, which is why there are vague slogans such as "Master ta3mo atyab" (Master tastes better - implicitly "better than competing brand X"). Usually advertisers respect that part of the law, knowing that if one trespasses it, the other brands it represents become an easy target.
So, it is a bit of a gentlemen's agreement between ad agencies (when the law came out Brinol compared to what was obviously Persil in the background and all fury broke loose. Also, there was a Nokia ad which referenced Blackberry by name as well. Yet another example October 2016 was the Dunkin Donuts ad that compared itself to Starbucks. However, these were rare exceptions that is if one does not count Halloween impersonations by Shawarmanji, which dressed itself as the other competitors in town such as Kababji, Crepaway or Roadster Diner.