FedEx CEO brushes off Amazon's new logistics service that recently sent shares tumbling

FedEx CEO Raj Subramaniam on Tuesday downplayed the competitive threat from Amazon's recent supply chain services announcement . "Last week's announcement versus what FedEx operates is completely different," Subramaniam told Jim Cramer on CNBC's " Mad Money ." "FedEx is a true end-to-end global network." On May 4, Amazon unveiled a new supply chain offering — Amazon Supply Chain Services — that will allow companies outside of its marketplace sellers to use its full suite of shipping, …