I'll be honest, I purchased C2 knowing it would not do for me what I needed at the time. I know html5 is a horrible way to go currently for many reasons and it takes something like Appmobi to make it usable on mobile phones.
What I need is not there yet looking at the release notes, but if Appmobile gets in to advertising with us developers then their prices should some down to entice more people to sign up making them even more money.
I researched many many engines, almost went with Corona, but they want $399 a year for PRO and they don't really have a IDE for crying out loud, no visual editor no text editor, really...
I am using Shiva right now because it supports, PC's,Mac's, BlackBerry's, IOS devices, Android, web via their plugin and they are add Stage 3d (new flash support) and Google Native
I say this not to down Construct 2, I really want it to grow in to an mature game making environment for mobile and during that growth I hope Appmobi realigns how it does business with us.
C2 is possible one of the easiest ways to make games, Shiva is not but I went for the device support for now and hoping one day to see C2 as one of my main dev environments for 2d games.