Also look at the execution of the plot on screen. Do you really want to compare the original Death Star attack with Starkiller assault side-by-side? Same plot elements can get boring AND pale in quality to the original.
I did compare it. The Starkiller assault was way better than the Death Star attack in the original. Everyone who likes TFA has even stated as much in their review.
From a looks perspective but the original Death Star battle had more tension even though it was obvious that it was going to blow up.