"You get a market bottom when earnings estimates are beaten," said Jim Cramer on Tuesday's "Stop Trading!" segment on CNBC. "Remember that for the last year, earnings estimates were always too high."This earnings season, more companies have been beating estimates than not. "This is an extraordinary time," said Cramer. "The analysts are just so negative, and we're getting number bumps, and people getting excited about stocks like Under Armour ( UA)." He said that Under Armour delivered a good quarter, and expectations were very low. "We are seeing economically sensitive stocks," Cramer said. "No one wants Bristol-Myers ( BMY), no one. Contrast that with Fortune Brands ( FO)."