best known for is in all cases without exception a subjective statement which cannot possibly be verified  In the example you give youd want to put something objective like their greatest commercial success came with TITLE which reached blah blah blah  But noones tried to enforce any standards for years and years and years and have instead rewarded idiots who have never created any content with power  So there are very few editors who can even tell the difference between subjective and objective these days  Seems like you might be one of them