One thing that article mentions;
the Sunspider Java benchmark scores better than Nexus One (Froyo), but is this the doing of Intel's Z600 or "better" software from MeeGo or both?

Actually that question is very very easily and conclusively answerable. The Aava mobile was designed for the Android platform and later considered adding MeeGo to the equation, the 2.2AOSP could be compiled (like 2.1 was) and the same test could be run to see what the effect each OS has on java performance.

Though this benchmark would be quite useless, just think about it.