If you arrived into, say, London and googled "Best fish and chips" would you believe that the top result gives you the meal that you're after?
Why not? It’s definitely a useful benchmark
I would believe those are some of the better options and definitely a useful benchmark.
1. How do you go about finding the "absolute" best when you go to a city
2. What does this have to do with the GP's question?
…yes? Feels like there’s some bit of tribal knowledge required to understand your point, but fewer people know it than you think.
as a Londoner I want to urge you to rethink your position.