Zulfiqar bhai, I am guessing people prefer LM in Pakistan, because it is selling in low volume, which means it is potentially available temper free. Whereas, the volume selling Shell, Caltex etx all have fake bottles circulating the market.
LM may not be the best, but you are more than likely to get an original product in Pakistan.
In my personal opinion, I used to pour LM religiously in my BMW E60, until I came across the Mobil 1 0-40W Euro formula (aka the Golden blend in the US) at a very good price. I was living in the Saudi Arabia back then, and fake products is not a big issue in Saudi market, so I quickly moved up the "value chain".