And who exactly considers it the best? ESB made half the money ANH did in theatres upon release in unadjusted sales.
Argmentum ad ticket sales? Really?
Yeah because your anecdotal evidence is rock solid. Much more relevant than hard numbers.
It's also by far the most critically beloved of the three.
Prove it.
Star Wars received an Academy Nomination for Best Picture. Won SIX Oscars. Another 38 Wins and 27 Nominations for other Awards.
Empire Strikes won ONE Oscar, was not nominated for Best Picture. Another 15 wins & 17 nominations.
Critic Scores / Metacritic
Star Wars - 92%
Empire Strikes Back - 79%
Critic Scores / Rotten Tomatoes:
Star Wars 94 %
Empire 94 %
But feel free to create some more anecdotal evidence, pull some words from one critic, trying to discredit the various sources I've given and continue to ignore the facts