Downloadable app Vs Browser based app for Mobiles

This is the the most common controversy that exists in the mobile application development. There are several views/contra views on each side..Just felt that I could add my views in this post. In one of his posts, David Wood of Symbian summarizes the following:

• Eric Schmidt (Google CEO) has been asking the Google Mobile team why they only make one app release every six months, whereas development of apps for PC web-browser happens much more quickly
• Downloadable apps for mobile devices are fraught with problems - including BIG issues with device fragmentation
• Taking Google Maps for mobile as an example: there are 10+ platforms to support, requiring 100's of builds in total - it all adds up to PAIN
• There must be a better way!
• The better way is to deliver services through the mobile web, instead of via downloadable applications.

Towards the browser apps, the drawbacks are as follows:

• Mobile web apps suck too!
• Javascript takes time to execute on mobile devices, and since it's single threaded, it blocks the UI
• There's often high network latency
• The mobile web apps lack access to location, the address book, and camera, etc.

Further, he states...

Four challenges facing mobile web apps

The four factors I generally highlight as limitations in mobile web applications vs. downloaded apps are:

1. The UI provided by a web browser is general purpose, and is often sub-optimal for a more complex application on the small screen of a mobile device (an example of the unsuitedness of the web browser UI in general is when users are confronted with messages such as "Don't press the Back button now!" or "Only press the OK button once!")
2. Applications need to be able to operate when they are disconnected from the network - as in an airplane or during a trip in an Olde World London underground train - or whenever reception is flaky. On a mobile device, the user experience of intermittently connected "push email" from the likes of BlackBerry is far more pleasant than an "always connected web browser" interface to server-side email
3. Web applications suffer from lack of access to much of the more "interesting" functionality on the phone
4. Web applications are often more sluggish than their downloaded equivalents.

So, where do we stand ? Guess, it is the choice the product managers need to make and not the developers ..