I should draw attention to any iPhone developer interested in developing iPhone web apps or debating between iPhone web apps and native apps to following link:
http://www.livescore.com/iphone/

The link is to the sports scores web site (iPhone app section of the site). What is special about this particular web site? Well it had highly touted version of iPhone web app for a while now. Several days ago I noticed that Livescore.com app is now out as the native iPhone app (there used to be web version for a while now). Check out the web version at:
http://iphone.livescore.com/

and then download the native version at:
http://itunes.apple.com/gb/app/livescore/id356928178?mt=8&ign-mpt=uo%3D6

After examining both you can be probably see for yourself difference between web version and native version of the app.