[quote]- it's not an arcade game but more like an interactive book, an adventure game or a webdocumentary. So CPU speed and device reactivity doesn't really matter[/quote]
than, Construct 2 is for you
try to build the game and see it yourself, beside that their also appmobi and cocoonjs option which his some boast benefit over phonegap, in case you care for performances.
sorry didn't see the video point >_<
i think you can use plugin, but not sure about if would implemented with phonegap.