Burlington stock and LendingTree bucked the broader stock market selloff Thursday as both stocks soared on their Q4 results. Burlington Stores (BURL) reported a 12% increase in Q4 earnings to $4.07 per share adjusted on about 5% revenue growth to $3.27 billion. Analysts polled by FactSet expected earnings of $3.77 per share on $3.24 billion in sales. Burlington’s comparable sales…