I would 100% disagree. The average "app" can most definitely be written in cordova / phonegap with jquerymobile / Intel App Framework or another MOBILE framewor

I would 100% disagree. The average "app" can most definitely be written in cordova / phonegap with jquerymobile / Intel App Framework or another MOBILE framework and run fine. I've spent the last few months implementing a plain cordova app with Intel App Framework , google maps api v3, some css3 transitions, etc. I've tested it on everything from Android 2.3.6 to 4.4, all work fine, no performance issues. Same on iOS. Now if you are taking something you've written for a desktop (and are using desktop frameworks) or something that starts doing crazy DOM manipulation (or adds "shadow dom's", etc) then yes you might see a performance problem... Additionally, if you are talking a physics enabled HTML5 game, that might be an issue. But a plain old app with some basic functionality will run fine. If it doesn't , YOUR doing it wrong.