I have heard about this before, but i have no device to test it now. Thanks for your test, and there are some details i will be interested in:
1, Will ART improve the cpu bound only(mainly)? For a game, which means AI、physics、draw calls...
2, What about the runtime-debuging?
3, How larger of the installed-apk will increase when enable ART?
4, From the result of QSort test of the article, seems there is also an obvious performance gap between JNI and ART.