Stub vs query

context "given an article with an average score of 4" do
  setup do
    @article = Factory(:article)
    3.times { Factory(:vote, :article => @article, :score => 4) }
  end

  should "display the score on GET to show" do
    get :show, :id => @article.to_param
    assert_select '.score', '4'
  end
end

context "given an article with an average score of 4" do
  setup do
    @article = Factory(:article)
    @article.stubs(:score => 4)
    Article.stubs(:find).with(@article.id).returns(@article)
  end

  should "display the score on GET to show" do
    get :show, :id => @article.to_param
    assert_select '.score', '4'
  end
end