Since its IPO last Friday shares of restaurant chain Noodles & Co. (NDLS +0.07%) have more than doubled. While insiders are celebrating, others are wondering if this is the next Chipotle (CMG -0.65%) or just a lot of hype. Motley Fool analyst Jason Moser digs into the numbers and examines how the two restaurants compare. Chipotle's profit margins are much more robust. That plus the fact that Noodles & Co. is brand-new to the public markets make this a stock investors should avoid for the time being.