Shares of JetBlue Airways Corp (NASDAQ: JBLU) have crossed above the average analyst 12-month target price of $4.33, with the stock changing hands at $4.38 per share in recent trading. When a stock surpasses the consensus price target, analysts typically face a straightforward choice between downgrading the stock on valuation grounds or revising their target upward to reflect new expectations. The decision analysts make often hinges on the under…