The only thing I've said is better on the HAF X is the cooling, and to me that is one of the most important things on a case and trumps things like a nice HDD cage. I've only tried to point out that other cases that people have claimed have better cooling in fact do not beat the HAF X in terms of air cooling ability or options. That is not an opinion, it is fact. You have more and better fan options on the HAF X then any other case, especially when it comes to air cooling your GPUs. The HAF X is the only case I know of that has the ability to have 3 fans dedicated specifically to GPU cooling.
Other cases can be good in terms of their cooling options be the fact still remains that no case has as much to offer for air cooling as the HAF X. Other cases either lack dedicated GPU cooling, have less efficient front intake or fewer options for exhaust. Some cases in just one of those areas while others lack in several. Again that is not opinion, it's fact, those other cases offer less air cooling options.