I fancy Flash is currently streets ahead still; in particular for 3D animation.
I have just been working on a HTML5/CSS3 site using Transforms/Transitions, To achieve a scaling effect, custom-made and specific in behaviour, took a disproportionate amount of time. Interesting the number of CSS3 Transition generators there are to compensate for the time-consuming effort required to calculate and development simple animations by hand.
Problem is, here in the UK, companies are not using Flash so it seems, apart from eLearning and Gaming apps.
Looks like the eventual death of an incredibly simple to use yet very powerful tool, great shame. Daft in fact, defies common sense!