JavaFX Questions

Sun has released a JavaFX preview. Having played around with it, here are my questions:

• Will using the scenegraph api consume less resources than a comparable app developed using DHTML? In Meebo is what’s wrong with the web (cached), Uncov writes that Meebo consumes 39Mb RAM over-and-above that of Firefox. Running a basic JavaFX app (JRE1.6u7) consumes about 33Mb “VM Size”, i.e. private process memory.
• Why is interpreted JavaFX script slow, when interpreted javascript is fast enough for client-side work? Web apps don’t necessarily have to compute prime numbers.
• Silverlight will consume markup generated from any web server. JavaFX requires a server-side compiler, or a precompiled script. Any client-side plugin ignores PHP at it’s own peril.