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.
Did you really expect to get something equally intriguing as the original Star Wars? Yes, Starkiller Base is probably TFA’s greatest weakness, but did you seriously expect to see something surpass the one and only original? TFA is a modern blockbuster movie and in comparison to other recent blockbuster movies it does fairly well. Do you think it’s even possible to create a unified coherent saga consisting of movies shot in 3 intervals over a course of 40 years?