Other issue is that events are going in one big loop,
so 100 events may be good for simple game,
but 10.000 events (I guess) could kill even desktop
also bullet behavior that isn't 100% smooth both on mobile/desktop
also saying "use Crosswalk" is not serious at this moment
and +18MB apk size can dramatically decrease number of downloads on Google Play
but yeah... anyway: there is no competition with anything similar to event sheets