I obtained from a Flash developer an animation done in both Flash and Html5:
Flash version: http://goo.gl/YK0sS6
Html5 version: http://goo.gl/5hCvDW
On my Android default browser on my Galaxy Note II (quad-core 1.6Ghz) the Flash version is totally fluid while the Html5 version has a very low framerate.
Are the html5 animations with many objects/layers renownedly slower than Flash or there's something wrong in the Htm5 code?