I would bet that the C272 is just a little more powerful and dynamic than the C270.
However, instead of looking for a C272 I would recommend stepping up just a bit more to the later model, C275BEE. I have this stereo amp and it has plenty of power to drive my Magnepan 3.6's and it sounds very, very good. It's not as powerful or dynamic as my Cary 500 mono blocks (1000 watts into 4 ohms) but the difference overall is not that great. It's hard to find a used C275 but they do show-up on Audiogon and Ebay every now and then. Should be able to snag a used one for around $800. A spectacular SS stereo amp for the money!
