Okay ... but how would a mobileOS constructed around Python+QML fare against one such as Dalvik+JIT ?

1) Do the advantages of C++ (or Qt/QML) outweigh the advantages of java (or Dalvik/VM)??

2) Does the disadvantages of java (Dalvik/VM) outweigh those of C++ (or Qt/QML)??


Based on my newbie-view (you can stop reading here if you want)
the way I see it with java;
-you get the advantage that its "easier" to develop
-more people know java coding, perhaps more developers
-works everywhere as long as the VM/engine is there

With C++/Qt/QML;
-you get very responsive applications (no slow animations)
-less buggy* (easy to correct mistakes; this one's personal)
-your work can be recycled and re-used for other systems (eg port to iOS)
-nearly as compatible as java-deployment

I would ultimately prefer a C++/QML based OS over java/Dalvik because it would mean higher quality of applications. Example, the psx emulator would run fullspeed on the MotoDroid (no overclock), everything would be at iPhone smoothness, perhaps faster and safer updates. I mean, its feeling like java's performance is plateu-ing whereas a layer deeper (QML) would mean a better user experience and probably even better battery life if done correctly (see the iPhone battery life, for example). Android is the next best thing for me, but right now it seems to be the better option for the masses (thoses asses!)