Seriously, how can there be that much difference between the two?
X has recently had a lot of improvements, including new track segments (I think), new trains, a new sound system and general improvements to it's looks, whereas Eejanaika hasn't?
Fuji Q is quite well known for having lousy operations, which normally detract greatly from the whole experience of a ride?
S&S had Meisho as a subcontractor for Eejanaika, who are known for making some pretty shocking rides?
Other than these, I can't see too much difference though...