The surface low was gradually filling in that case. This time we will have a deepening surface low. As others have said, there are some similarities on the larger scale and the threat area is quite similar to 1974. Other than that, I'd be really hesitant to say that this will be as bad as that...you'd be wrong at least 999 times out of 1000. It's sorta one of those things that you just have to let play out.