Article length is not irrelevant because featured article criteria require that an article is of appropriate length.  Surely you'd agree that if Jenna Jameson = Gandhi then one of them is not of appropriate length?  So the question is which one.  Frankly, very very few people will read all of an article that's longer than 32kb unless it's on something of crucial importance to science, history or the arts.  If you write 100kb on a Canadian regional politician (and that is a truly terrible article), or 60kb on a porn star, then unfortunately I fear that your time has not been well spent because few people will read the article.  If it was 20kb long, it would have a much more enthusiastic readership, and you could have written at least five very good 20kb articles in the time it takes to do one very good 60kb article.