Daniel Slim/AFP via Getty Images Delta Air Lines missed estimates for adjusted earnings per share in the fourth quarter and issued a forecast for the first quarter that was below Wall Street estimates. Ordinarily, that might be enough to knock down the stock. But shares of Delta (ticker: DAL) are rallying more than 3% because things could have been a lot worse. Delta posted an adjusted loss of $2.53 a share, missing consensus estimates for a loss of $2.50 a share, according to FactSet. The airline reported passenger revenue of $2.7 billion, largely matching forecasts and down 74% from a year earlier. Total adjusted revenue (including cargo, ancillary, and credit-card revenue) came in at $3.5 billion, missing estimates for $3.7 billion in total sales.