Who really cares about 325 feet? People will still say Superman's bigger than the both of em. Sure, if MF was going to be taller, we'd all be on MF's side, but it's not, so lets go with our American...British....German... whatever pride and have a US "coaster" be taller.
And what's the shame of having the tallest full circut coaster in the US? I think that's really great. The analogy I can give is like Japan is to the U.S. as all those Asian geniouses are to us when we were (or are) in school. They just have the better thrill ride country (and bodies!)
I bet we make up the 10% of the Cedar Point visitors that have any idea that Japan is doing this.