It is interesting that so many of the HAF X features were not used or were dismissed as not important. You did not compare ease of build for example.
I am not sure why the CPU cooling of the HAF X was not more efficient and it is very competitive in CPU cooling in reviews. It appears that there must be a lack of air flow over the CPU in the design. Curiously though, with the HAF X you would probably have a better CPU cooler than the $30 low-end cooler that is used in this review. Pair the HAF X with a Noctua NH-D14 and you would have the best of all worlds as it is the most efficient case made for cooling the GPUs even beating the top rated Silverstone Fortress.
Just because you do not use the hot-swap bays, tooless access and other features doesn't mean that they should not be included in the overall value comparison of the two. For example, what if you could OC the GPUs, then it would become very important which case cools the GPU well.
It is somewhat disappointing to see that the HAF X could only essentially tie the Lian Li in CPU cooling seeing that includes larger fans and more fans. I have seen this trait in other HAF X reviews.
Also, considering the openness of the HAF X case, it is possible that the change (increase) in noise was due not to the HAF X having more fans, but that the 6970 GPU fans were more audible in the HAF X than the closed Lian Li. The 6970 is not the most quiet GPU and there are two in this build. But the openess of the HAF X is why it is one of the best cooling cases in existence and the Fortress fans are also very audible (because it is a top venting case).
I do like the conservative looks of the Lian Li better.