Amazon (AMZN) received several mentions Tuesday from Wall Street analysts covering a range of topics. The cautiously optimistic commentary about the initiatives management is taking to cut costs and bring investments to a level more in line with revenue dynamics and the slowing global economy increases our conviction that margin pressure should begin to abate. Still down about 40% year to date, Amazon shares have gained about 15% since last Thursday's surge higher along with the broader market. The stock had been on the skids since reporting just an OK quarter and weak guidance after the closing bell on Oct….