These stocks look like twins at first glance, but a deeper look reveals key differences.Sin stocks, such as tobacco companies, aren't for everyone, but they make excellent dividend stocks due to their entrenched and resilient business models and huge profit margins, which allow them to send most of their profits to shareholders.Altria Group (MO -0.09%) and British American Tobacco (BTI -0.37%) are industry leaders with many similarities, including outsized dividends that yield around 7% at their current sha ...