CNBC's Jim Cramer on reviewed Walmart's quarter, suggesting the big box retailer's strong results are due to its successful business strategy and aren't necessarily indicative of a favorable consumer landscape."Don't make the mistake of assuming that Walmart's results give you some kind of generic read on the consumer," Cramer said. "You can't just extrapolate from the best operator in the industry to everyone else."Walmart on Thursday topped analysts' expectations for earnings and revenue and raised its fu ...