Why does he have to be "best known" for anything. Best Known is a subjective term, and is down to individual opinion as to what it means, and wiki is not here to post opinion. Lance Armstrong is simply, a former cyclist, and triathlete who in 2012 was banned from competition and stripped of his seven tour de france titles. In some circles he is best known as a drugs cheat, in other circles as a cancer survivor, in other circles as a bully and a liar, in other circles as a seven times tour de france winner. Its subjective, and wikipedia is not here for that