class BenchmarkDriver::Output::Compare

def show_slower(better_result, worse_result)
  top = worse_result.value
  bottom = better_result.value
  top, bottom = bottom, top if @metrics.first.larger_better
  unless BenchmarkDriver::Result::ERROR.equal?(bottom)
    ratio = top / bottom
    sprintf("- %.2fx  %s", ratio, @metrics.first.worse_word)
  end
end