Baker: I do agree with you that it is a bit two dimensional... but for a quick quiz, it does an ok job of setting up some positions on the issues.
Madine: I've heard of American Neocolonialism, but never as boldly stated as the "American Empire," although they do call the post-WWII period Pax Americana sometimes, which would seem to correspond to Pax Britannia and Pax Romana.
On the forum I found it on, isolationism was the least common designation, with "liberal" being the top choice. Then again, most of the people who go there skew really left too while there is a tendency for JU to be a lot more centrist-oriented.